I could excruciate you could excruciate she could excruciate we could excruciate you could excruciate they could excruciate
V-ing form
I could be excruciating you could be excruciating she could be excruciating we could be excruciating you could be excruciating they could be excruciating
Perfect
I could have excruciated you could have excruciated she could have excruciated we could have excruciated you could have excruciated they could have excruciated
V-ing perfect
I could have been excruciating you could have been excruciating she could have been excruciating we could have been excruciating you could have been excruciating they could have been excruciating
Negation
Simple form
I couldn't excruciate you couldn't excruciate she couldn't excruciate we couldn't excruciate you couldn't excruciate they couldn't excruciate
V-ing form
I couldn't be excruciating you couldn't be excruciating she couldn't be excruciating we couldn't be excruciating you couldn't be excruciating they couldn't be excruciating
Perfect
I couldn't have excruciated you couldn't have excruciated she couldn't have excruciated we couldn't have excruciated you couldn't have excruciated they couldn't have excruciated
V-ing perfect
I couldn't have been excruciating you couldn't have been excruciating she couldn't have been excruciating we couldn't have been excruciating you couldn't have been excruciating they couldn't have been excruciating
Interrogative form
Simple form
could I excruciate? could you excruciate? could she excruciate? could we excruciate? could you excruciate? could they excruciate?
V-ing form
could I be excruciating? could you be excruciating? could she be excruciating? could we be excruciating? could you be excruciating? could they be excruciating?
Perfect
could I have excruciated? could you have excruciated? could she have excruciated? could we have excruciated? could you have excruciated? could they have excruciated?
V-ing perfect
could I have been excruciating? could you have been excruciating? could she have been excruciating? could we have been excruciating? could you have been excruciating? could they have been excruciating?
Interro-negative form
Simple form
couldn't I excruciate? couldn't you excruciate? couldn't she excruciate? couldn't we excruciate? couldn't you excruciate? couldn't they excruciate?
V-ing form
couldn't I be excruciating? couldn't you be excruciating? couldn't she be excruciating? couldn't we be excruciating? couldn't you be excruciating? couldn't they be excruciating?
Perfect
couldn't I have excruciated? couldn't you have excruciated? couldn't she have excruciated? couldn't we have excruciated? couldn't you have excruciated? couldn't they have excruciated?
V-ing perfect
couldn't I have been excruciating? couldn't you have been excruciating? couldn't she have been excruciating? couldn't we have been excruciating? couldn't you have been excruciating? couldn't they have been excruciating?