A suction cup of an octopus (mang-) sucks, suctions onto someone or something (-an).
Kolilisepan naw kokod ko no koyta.
(A suction cup) of the octopus suctions onto my leg.
A suction cup of an octopus has sucked onto someone or something (ma--an).
Malidyat a malkab makolilisepan no koyta.
It is difficult to pry off (the suction cups) of the octopus when they have sucked onto (you).