I can preappoint you can preappoint he can preappoint we can preappoint you can preappoint they can preappoint
V-ing form
I can be preappointing you can be preappointing he can be preappointing we can be preappointing you can be preappointing they can be preappointing
Perfect
I can have preappointed you can have preappointed he can have preappointed we can have preappointed you can have preappointed they can have preappointed
V-ing perfect
I can have been preappointing you can have been preappointing he can have been preappointing we can have been preappointing you can have been preappointing they can have been preappointing
Negation
Simple form
I can't preappoint you can't preappoint he can't preappoint we can't preappoint you can't preappoint they can't preappoint
V-ing form
I can't be preappointing you can't be preappointing he can't be preappointing we can't be preappointing you can't be preappointing they can't be preappointing
Perfect
I can't have preappointed you can't have preappointed he can't have preappointed we can't have preappointed you can't have preappointed they can't have preappointed
V-ing perfect
I can't have been preappointing you can't have been preappointing he can't have been preappointing we can't have been preappointing you can't have been preappointing they can't have been preappointing
Interrogative form
Simple form
can I preappoint? can you preappoint? can he preappoint? can we preappoint? can you preappoint? can they preappoint?
V-ing form
can I be preappointing? can you be preappointing? can he be preappointing? can we be preappointing? can you be preappointing? can they be preappointing?
Perfect
can I have preappointed? can you have preappointed? can he have preappointed? can we have preappointed? can you have preappointed? can they have preappointed?
V-ing perfect
can I have been preappointing? can you have been preappointing? can he have been preappointing? can we have been preappointing? can you have been preappointing? can they have been preappointing?
Interro-negative form
Simple form
can't I preappoint? can't you preappoint? can't he preappoint? can't we preappoint? can't you preappoint? can't they preappoint?
V-ing form
can't I be preappointing? can't you be preappointing? can't he be preappointing? can't we be preappointing? can't you be preappointing? can't they be preappointing?
Perfect
can't I have preappointed? can't you have preappointed? can't he have preappointed? can't we have preappointed? can't you have preappointed? can't they have preappointed?
V-ing perfect
can't I have been preappointing? can't you have been preappointing? can't he have been preappointing? can't we have been preappointing? can't you have been preappointing? can't they have been preappointing?