English verb conjugation
COULD TOSS

Regular verb: toss - tossed - tossed

Affirmation

Simple form	V-ing form
I could toss you could toss she could toss we could toss you could toss they could toss	I could be tossing you could be tossing she could be tossing we could be tossing you could be tossing they could be tossing
Perfect	V-ing perfect
I could have tossed you could have tossed she could have tossed we could have tossed you could have tossed they could have tossed	I could have been tossing you could have been tossing she could have been tossing we could have been tossing you could have been tossing they could have been tossing

Negation

Simple form	V-ing form
I couldn't toss you couldn't toss she couldn't toss we couldn't toss you couldn't toss they couldn't toss	I couldn't be tossing you couldn't be tossing she couldn't be tossing we couldn't be tossing you couldn't be tossing they couldn't be tossing
Perfect	V-ing perfect
I couldn't have tossed you couldn't have tossed she couldn't have tossed we couldn't have tossed you couldn't have tossed they couldn't have tossed	I couldn't have been tossing you couldn't have been tossing she couldn't have been tossing we couldn't have been tossing you couldn't have been tossing they couldn't have been tossing

Interrogative form

Simple form	V-ing form
could I toss? could you toss? could she toss? could we toss? could you toss? could they toss?	could I be tossing? could you be tossing? could she be tossing? could we be tossing? could you be tossing? could they be tossing?
Perfect	V-ing perfect
could I have tossed? could you have tossed? could she have tossed? could we have tossed? could you have tossed? could they have tossed?	could I have been tossing? could you have been tossing? could she have been tossing? could we have been tossing? could you have been tossing? could they have been tossing?

Interro-negative form

Simple form	V-ing form
couldn't I toss? couldn't you toss? couldn't she toss? couldn't we toss? couldn't you toss? couldn't they toss?	couldn't I be tossing? couldn't you be tossing? couldn't she be tossing? couldn't we be tossing? couldn't you be tossing? couldn't they be tossing?
Perfect	V-ing perfect
couldn't I have tossed? couldn't you have tossed? couldn't she have tossed? couldn't we have tossed? couldn't you have tossed? couldn't they have tossed?	couldn't I have been tossing? couldn't you have been tossing? couldn't she have been tossing? couldn't we have been tossing? couldn't you have been tossing? couldn't they have been tossing?