Present participle of regular -ar verbs
-ando
Present participle of regular -er verbs
-iendo
Present participle of regular -ir verbs
-iendo
Present participle when the stem of an -er or -ir verb ends in a vowel (leer)
-yendo (leyendo)
Present participle of ir (irregular)
yendo
Present participle of poder (irregular)
pudiendo
Present participle of venir (irregular)
viniendo
Rule for the present participle of -ir e:ie verbs
e–>i in the present participle (preferir > prefiriendo)
Rule for the present participle of -ir e:i verbs
e–>i in the present participle (conseguir > consiguiendo)
Rule for the present participle of -ir o:ue verbs
o–>u in the present participle (dormir > durmiendo)