English verb conjugation
COULD YACHT

Regular verb: yacht - yachted - yachted

Affirmation

Simple form	V-ing form
I could yacht you could yacht she could yacht we could yacht you could yacht they could yacht	I could be yachting you could be yachting she could be yachting we could be yachting you could be yachting they could be yachting
Perfect	V-ing perfect
I could have yachted you could have yachted she could have yachted we could have yachted you could have yachted they could have yachted	I could have been yachting you could have been yachting she could have been yachting we could have been yachting you could have been yachting they could have been yachting

Negation

Simple form	V-ing form
I couldn't yacht you couldn't yacht she couldn't yacht we couldn't yacht you couldn't yacht they couldn't yacht	I couldn't be yachting you couldn't be yachting she couldn't be yachting we couldn't be yachting you couldn't be yachting they couldn't be yachting
Perfect	V-ing perfect
I couldn't have yachted you couldn't have yachted she couldn't have yachted we couldn't have yachted you couldn't have yachted they couldn't have yachted	I couldn't have been yachting you couldn't have been yachting she couldn't have been yachting we couldn't have been yachting you couldn't have been yachting they couldn't have been yachting

Interrogative form

Simple form	V-ing form
could I yacht? could you yacht? could she yacht? could we yacht? could you yacht? could they yacht?	could I be yachting? could you be yachting? could she be yachting? could we be yachting? could you be yachting? could they be yachting?
Perfect	V-ing perfect
could I have yachted? could you have yachted? could she have yachted? could we have yachted? could you have yachted? could they have yachted?	could I have been yachting? could you have been yachting? could she have been yachting? could we have been yachting? could you have been yachting? could they have been yachting?

Interro-negative form

Simple form	V-ing form
couldn't I yacht? couldn't you yacht? couldn't she yacht? couldn't we yacht? couldn't you yacht? couldn't they yacht?	couldn't I be yachting? couldn't you be yachting? couldn't she be yachting? couldn't we be yachting? couldn't you be yachting? couldn't they be yachting?
Perfect	V-ing perfect
couldn't I have yachted? couldn't you have yachted? couldn't she have yachted? couldn't we have yachted? couldn't you have yachted? couldn't they have yachted?	couldn't I have been yachting? couldn't you have been yachting? couldn't she have been yachting? couldn't we have been yachting? couldn't you have been yachting? couldn't they have been yachting?