English verb conjugation
COULD MUSCLE

Regular verb: muscle - muscled - muscled

Affirmation

Simple form	V-ing form
I could muscle you could muscle he could muscle we could muscle you could muscle they could muscle	I could be muscling you could be muscling he could be muscling we could be muscling you could be muscling they could be muscling
Perfect	V-ing perfect
I could have muscled you could have muscled he could have muscled we could have muscled you could have muscled they could have muscled	I could have been muscling you could have been muscling he could have been muscling we could have been muscling you could have been muscling they could have been muscling

Negation

Simple form	V-ing form
I couldn't muscle you couldn't muscle he couldn't muscle we couldn't muscle you couldn't muscle they couldn't muscle	I couldn't be muscling you couldn't be muscling he couldn't be muscling we couldn't be muscling you couldn't be muscling they couldn't be muscling
Perfect	V-ing perfect
I couldn't have muscled you couldn't have muscled he couldn't have muscled we couldn't have muscled you couldn't have muscled they couldn't have muscled	I couldn't have been muscling you couldn't have been muscling he couldn't have been muscling we couldn't have been muscling you couldn't have been muscling they couldn't have been muscling

Interrogative form

Simple form	V-ing form
could I muscle? could you muscle? could he muscle? could we muscle? could you muscle? could they muscle?	could I be muscling? could you be muscling? could he be muscling? could we be muscling? could you be muscling? could they be muscling?
Perfect	V-ing perfect
could I have muscled? could you have muscled? could he have muscled? could we have muscled? could you have muscled? could they have muscled?	could I have been muscling? could you have been muscling? could he have been muscling? could we have been muscling? could you have been muscling? could they have been muscling?

Interro-negative form

Simple form	V-ing form
couldn't I muscle? couldn't you muscle? couldn't he muscle? couldn't we muscle? couldn't you muscle? couldn't they muscle?	couldn't I be muscling? couldn't you be muscling? couldn't he be muscling? couldn't we be muscling? couldn't you be muscling? couldn't they be muscling?
Perfect	V-ing perfect
couldn't I have muscled? couldn't you have muscled? couldn't he have muscled? couldn't we have muscled? couldn't you have muscled? couldn't they have muscled?	couldn't I have been muscling? couldn't you have been muscling? couldn't he have been muscling? couldn't we have been muscling? couldn't you have been muscling? couldn't they have been muscling?