In definition:

setai (comp!)
tamsmi modal, 2nd place similarly; resembling ... (in ideal form).
tai
tamsmi modal, 1st place (like)/(in manner 2) resembling ...; sharing ideal form ...
tetai (comp!)
tamsmi modal, 3rd place similarly; sharing common ideal form ...
vetai (comp!)
tamsmi modal, 4th place similarly; sharing ideal form in property ...

In notes:

caltaismi
x1 is shaped (physically/geometrically) like x2, with shape x3
lu'ei (exp!)
convert a grammatical quotation to a tanru unit; x1 expresses/says the quoted text for audience x2 via expressive medium x3.
oljytamfu'i
x1 is an aggressive mimic of x2 in form x3 by method x4.
tai'i (exp!)
Converts following cmevla or zoi-quote into phenomime.
tasmi
x1 is the way or manner in which activity/event x2 is done/happens