English verb conjugation
CAN CREDIT

Regular verb: credit - credited - credited

Affirmation

Simple form	V-ing form
I can credit you can credit he can credit we can credit you can credit they can credit	I can be crediting you can be crediting he can be crediting we can be crediting you can be crediting they can be crediting
Perfect	V-ing perfect
I can have credited you can have credited he can have credited we can have credited you can have credited they can have credited	I can have been crediting you can have been crediting he can have been crediting we can have been crediting you can have been crediting they can have been crediting

Negation

Simple form	V-ing form
I can't credit you can't credit he can't credit we can't credit you can't credit they can't credit	I can't be crediting you can't be crediting he can't be crediting we can't be crediting you can't be crediting they can't be crediting
Perfect	V-ing perfect
I can't have credited you can't have credited he can't have credited we can't have credited you can't have credited they can't have credited	I can't have been crediting you can't have been crediting he can't have been crediting we can't have been crediting you can't have been crediting they can't have been crediting

Interrogative form

Simple form	V-ing form
can I credit? can you credit? can he credit? can we credit? can you credit? can they credit?	can I be crediting? can you be crediting? can he be crediting? can we be crediting? can you be crediting? can they be crediting?
Perfect	V-ing perfect
can I have credited? can you have credited? can he have credited? can we have credited? can you have credited? can they have credited?	can I have been crediting? can you have been crediting? can he have been crediting? can we have been crediting? can you have been crediting? can they have been crediting?

Interro-negative form

Simple form	V-ing form
can't I credit? can't you credit? can't he credit? can't we credit? can't you credit? can't they credit?	can't I be crediting? can't you be crediting? can't he be crediting? can't we be crediting? can't you be crediting? can't they be crediting?
Perfect	V-ing perfect
can't I have credited? can't you have credited? can't he have credited? can't we have credited? can't you have credited? can't they have credited?	can't I have been crediting? can't you have been crediting? can't he have been crediting? can't we have been crediting? can't you have been crediting? can't they have been crediting?