mo'e MOhE cmavo

convert sumti to mex operand; sample use in story arithmetic: [3 apples] + [3 apples] = what.

In definition:

For mo'e x4 x in x1 there exist mo'e x5 y in x2 such that x me'au x3 y; for mo'e x6 y in x2 there exist mo'e x7 x in x1 such that x me'au x3 y.

In notes:

arbitrary character string or irregular number