English verb conjugation
CAN SINGE

Regular verb: singe - singed - singed

Affirmation

Simple form	V-ing form
I can singe you can singe she can singe we can singe you can singe they can singe	I can be singing you can be singing she can be singing we can be singing you can be singing they can be singing
Perfect	V-ing perfect
I can have singed you can have singed she can have singed we can have singed you can have singed they can have singed	I can have been singing you can have been singing she can have been singing we can have been singing you can have been singing they can have been singing

Negation

Simple form	V-ing form
I can't singe you can't singe she can't singe we can't singe you can't singe they can't singe	I can't be singing you can't be singing she can't be singing we can't be singing you can't be singing they can't be singing
Perfect	V-ing perfect
I can't have singed you can't have singed she can't have singed we can't have singed you can't have singed they can't have singed	I can't have been singing you can't have been singing she can't have been singing we can't have been singing you can't have been singing they can't have been singing

Interrogative form

Simple form	V-ing form
can I singe? can you singe? can she singe? can we singe? can you singe? can they singe?	can I be singing? can you be singing? can she be singing? can we be singing? can you be singing? can they be singing?
Perfect	V-ing perfect
can I have singed? can you have singed? can she have singed? can we have singed? can you have singed? can they have singed?	can I have been singing? can you have been singing? can she have been singing? can we have been singing? can you have been singing? can they have been singing?

Interro-negative form

Simple form	V-ing form
can't I singe? can't you singe? can't she singe? can't we singe? can't you singe? can't they singe?	can't I be singing? can't you be singing? can't she be singing? can't we be singing? can't you be singing? can't they be singing?
Perfect	V-ing perfect
can't I have singed? can't you have singed? can't she have singed? can't we have singed? can't you have singed? can't they have singed?	can't I have been singing? can't you have been singing? can't she have been singing? can't we have been singing? can't you have been singing? can't they have been singing?