I can gratify you can gratify he can gratify we can gratify you can gratify they can gratify
V-ing form
I can be gratifying you can be gratifying he can be gratifying we can be gratifying you can be gratifying they can be gratifying
Perfect
I can have gratified you can have gratified he can have gratified we can have gratified you can have gratified they can have gratified
V-ing perfect
I can have been gratifying you can have been gratifying he can have been gratifying we can have been gratifying you can have been gratifying they can have been gratifying
Negation
Simple form
I can't gratify you can't gratify he can't gratify we can't gratify you can't gratify they can't gratify
V-ing form
I can't be gratifying you can't be gratifying he can't be gratifying we can't be gratifying you can't be gratifying they can't be gratifying
Perfect
I can't have gratified you can't have gratified he can't have gratified we can't have gratified you can't have gratified they can't have gratified
V-ing perfect
I can't have been gratifying you can't have been gratifying he can't have been gratifying we can't have been gratifying you can't have been gratifying they can't have been gratifying
Interrogative form
Simple form
can I gratify? can you gratify? can he gratify? can we gratify? can you gratify? can they gratify?
V-ing form
can I be gratifying? can you be gratifying? can he be gratifying? can we be gratifying? can you be gratifying? can they be gratifying?
Perfect
can I have gratified? can you have gratified? can he have gratified? can we have gratified? can you have gratified? can they have gratified?
V-ing perfect
can I have been gratifying? can you have been gratifying? can he have been gratifying? can we have been gratifying? can you have been gratifying? can they have been gratifying?
Interro-negative form
Simple form
can't I gratify? can't you gratify? can't he gratify? can't we gratify? can't you gratify? can't they gratify?
V-ing form
can't I be gratifying? can't you be gratifying? can't he be gratifying? can't we be gratifying? can't you be gratifying? can't they be gratifying?
Perfect
can't I have gratified? can't you have gratified? can't he have gratified? can't we have gratified? can't you have gratified? can't they have gratified?
V-ing perfect
can't I have been gratifying? can't you have been gratifying? can't he have been gratifying? can't we have been gratifying? can't you have been gratifying? can't they have been gratifying?