I can formulate you can formulate she can formulate we can formulate you can formulate they can formulate
V-ing form
I can be formulating you can be formulating she can be formulating we can be formulating you can be formulating they can be formulating
Perfect
I can have formulated you can have formulated she can have formulated we can have formulated you can have formulated they can have formulated
V-ing perfect
I can have been formulating you can have been formulating she can have been formulating we can have been formulating you can have been formulating they can have been formulating
Negation
Simple form
I can't formulate you can't formulate she can't formulate we can't formulate you can't formulate they can't formulate
V-ing form
I can't be formulating you can't be formulating she can't be formulating we can't be formulating you can't be formulating they can't be formulating
Perfect
I can't have formulated you can't have formulated she can't have formulated we can't have formulated you can't have formulated they can't have formulated
V-ing perfect
I can't have been formulating you can't have been formulating she can't have been formulating we can't have been formulating you can't have been formulating they can't have been formulating
Interrogative form
Simple form
can I formulate? can you formulate? can she formulate? can we formulate? can you formulate? can they formulate?
V-ing form
can I be formulating? can you be formulating? can she be formulating? can we be formulating? can you be formulating? can they be formulating?
Perfect
can I have formulated? can you have formulated? can she have formulated? can we have formulated? can you have formulated? can they have formulated?
V-ing perfect
can I have been formulating? can you have been formulating? can she have been formulating? can we have been formulating? can you have been formulating? can they have been formulating?
Interro-negative form
Simple form
can't I formulate? can't you formulate? can't she formulate? can't we formulate? can't you formulate? can't they formulate?
V-ing form
can't I be formulating? can't you be formulating? can't she be formulating? can't we be formulating? can't you be formulating? can't they be formulating?
Perfect
can't I have formulated? can't you have formulated? can't she have formulated? can't we have formulated? can't you have formulated? can't they have formulated?
V-ing perfect
can't I have been formulating? can't you have been formulating? can't she have been formulating? can't we have been formulating? can't you have been formulating? can't they have been formulating?