Higher numbers in Barxaw are a slightly complex affair. For superstitious reasons, some kinds of things are associated with certain numbers - i.e. extended family is for some reason associated with the number 16. Basically, for most noun classes, the number that the most primary, prototypical members of each noun class are associated with influence how other nouns of the same class are counted. Nouns can be members of several noun classes.
However, at this point, postponing a short introduction to the noun classes makes no sense, so those first. A table of particles that show congruence with these might appear sometime soon:
Class 1 includes humans, and some animals (talking animals in fables, for instance, and the bear), and many natural phenomena (the sun and moon, rainbows, fire) (number: 5)
Class 2 includes most animals that are tamed, and a few wild animals that are economically important - deer, some wild ruminants, wild birds whose eggs are harvested. The larger types of fish that are commonly caught are also included by some speakers, especially those that live in maritime environments. Also includes buildings that have with animal-keeping to do, as well as implements related to animal-keeping. (number: 12)
Class 3 includes buildings and places, as well as religiously significant plants and items. Some large items, such as wagons, chariots and some groups of people - military units, groups working in coordination, ethnicities, slaves taken as a group. Water, and some natural phenomena also are in this group (rain, storms, wind, seasons, festivals) (number: 4)
Class 4 includes fish, small birds, culturally important plants (both wild and cultivated) and their produce, edible leaves, eggs, foodstuff in general, roundish stones (some of which also are religiously significant items). (number: 24)
Class 5 includes fingers and hands, tools, large useful leaves, clothing, animal and plant products that are not food, non-roundish stones. Furniture, wheels, fabrics, strings, books, etc. Things that have been made by humans but are not reasonably classed as 'locations'. (number: 10)
Class 6 includes human external bodyparts, human qualities and things associated with being human - souls, thoughts, hair, voices, demeanors, etc. (number: 8)
Class 7 includes animal external bodyparts, human internal organs, animal internal organs, things that are intrinsic content of things in general, materials. If souls, thoughts, demeanors are attributed to animals, they shift to class 7. (number: 20)
Class 8: most other things. (number: 15)
Now, we have the following basic numbers, which normally are followed by a counter word:
1: bán
2: wík
3: tàx
4: ŋùx, class III: tagùl
5: fát, class I: xìpùr
6: tabí
7: nèm
8: síð, class VI: síðbé
9: dúl
10: pàli, class V: fawì
11: kták
12: sást ,class II: kubàŋ
13: sástán
14: sáswík
15: sáttàx, class VIII: dómn
16: sáŋŋùx family terminology: sxùm lun
17: sáffát
18: sátabí
19: sattèm
20: sástìð, class VII: muxìp
21: sástúl
22: sáspàli
23: sátták
24: wìksást IV: tagùl
Notice that 4, class III and 24, class IV indeed are identical. Higher numbers are formed per class by multiplying the class' special number with some integer and adding a lesser integer after it, i.e.
dúl síðbe ŋùx = 9*8 + 4
wík dómn sáswík = 2*15+14 = 44
The multiples that one uses with this system do come from the regular duodecimal system though. This system only is used up to values about 150 or thereabouts, and for higher numbers a more regular duodecimal system is in use.
Beyond wìksást we get forms such as 3*12 = tàssást, 4*12 = ŋùssást, 5*12 = fáttást, 6*12 = tabisást, etc, and once 144 is reached, similar numbers are formed using the word etíð. Beyond etìð, a base-six system keeps going with dì im bal, dì aŋ bal, and dì wuk bal as the next steps. Scholars have systems that vary from school to school for expressing larger numbers.