English verb conjugation
CAN THINK

Irregular verb: think - thought - thought

Affirmation

Simple form	V-ing form
I can think you can think she can think we can think you can think they can think	I can be thinking you can be thinking she can be thinking we can be thinking you can be thinking they can be thinking
Perfect	V-ing perfect
I can have thought you can have thought she can have thought we can have thought you can have thought they can have thought	I can have been thinking you can have been thinking she can have been thinking we can have been thinking you can have been thinking they can have been thinking

Negation

Simple form	V-ing form
I can't think you can't think she can't think we can't think you can't think they can't think	I can't be thinking you can't be thinking she can't be thinking we can't be thinking you can't be thinking they can't be thinking
Perfect	V-ing perfect
I can't have thought you can't have thought she can't have thought we can't have thought you can't have thought they can't have thought	I can't have been thinking you can't have been thinking she can't have been thinking we can't have been thinking you can't have been thinking they can't have been thinking

Interrogative form

Simple form	V-ing form
can I think? can you think? can she think? can we think? can you think? can they think?	can I be thinking? can you be thinking? can she be thinking? can we be thinking? can you be thinking? can they be thinking?
Perfect	V-ing perfect
can I have thought? can you have thought? can she have thought? can we have thought? can you have thought? can they have thought?	can I have been thinking? can you have been thinking? can she have been thinking? can we have been thinking? can you have been thinking? can they have been thinking?

Interro-negative form

Simple form	V-ing form
can't I think? can't you think? can't she think? can't we think? can't you think? can't they think?	can't I be thinking? can't you be thinking? can't she be thinking? can't we be thinking? can't you be thinking? can't they be thinking?
Perfect	V-ing perfect
can't I have thought? can't you have thought? can't she have thought? can't we have thought? can't you have thought? can't they have thought?	can't I have been thinking? can't you have been thinking? can't she have been thinking? can't we have been thinking? can't you have been thinking? can't they have been thinking?