fi'ei BAI experimental cmavo

ifle modal, 1st place: if [sumti] (du'u or nu) is true...

See ifle, ganai, va'o, tefi'ei

In notes:

tefi'ei (comp!)
ifle modal, 3rd place: "otherwise..." (du'u or nu)
x1 is a material conditional/'IF' statement (logical statement) saying that x2 (du'u) logically implies x3 (du'u) ("x3 is true if x2 is true; if x2, then x3; x2 being true is sufficient to guarantee the truth of x3").