si'e MOI cmavo

convert number to portion selbri; x1 is an (n)th portion of mass/totality x2; (cf. gunma).

On affix form:

x1 is made of/contains/is a quantity/expanse of snow.

In notes:

x1 is the unit of a form of rhythm of x2
x1 is tempo of rhythmic movement x2 with the unit x3; x1 is a time interval and corresponds to the unit x3 of a form of rhythm of x2.
si'ei (exp!)
numeric suffix: indicates that the number refers to portionality instead of cardinality