I can radiotelephone you can radiotelephone he can radiotelephone we can radiotelephone you can radiotelephone they can radiotelephone
V-ing form
I can be radiotelephoning you can be radiotelephoning he can be radiotelephoning we can be radiotelephoning you can be radiotelephoning they can be radiotelephoning
Perfect
I can have radiotelephoned you can have radiotelephoned he can have radiotelephoned we can have radiotelephoned you can have radiotelephoned they can have radiotelephoned
V-ing perfect
I can have been radiotelephoning you can have been radiotelephoning he can have been radiotelephoning we can have been radiotelephoning you can have been radiotelephoning they can have been radiotelephoning
Negation
Simple form
I can't radiotelephone you can't radiotelephone he can't radiotelephone we can't radiotelephone you can't radiotelephone they can't radiotelephone
V-ing form
I can't be radiotelephoning you can't be radiotelephoning he can't be radiotelephoning we can't be radiotelephoning you can't be radiotelephoning they can't be radiotelephoning
Perfect
I can't have radiotelephoned you can't have radiotelephoned he can't have radiotelephoned we can't have radiotelephoned you can't have radiotelephoned they can't have radiotelephoned
V-ing perfect
I can't have been radiotelephoning you can't have been radiotelephoning he can't have been radiotelephoning we can't have been radiotelephoning you can't have been radiotelephoning they can't have been radiotelephoning
Interrogative form
Simple form
can I radiotelephone? can you radiotelephone? can he radiotelephone? can we radiotelephone? can you radiotelephone? can they radiotelephone?
V-ing form
can I be radiotelephoning? can you be radiotelephoning? can he be radiotelephoning? can we be radiotelephoning? can you be radiotelephoning? can they be radiotelephoning?
Perfect
can I have radiotelephoned? can you have radiotelephoned? can he have radiotelephoned? can we have radiotelephoned? can you have radiotelephoned? can they have radiotelephoned?
V-ing perfect
can I have been radiotelephoning? can you have been radiotelephoning? can he have been radiotelephoning? can we have been radiotelephoning? can you have been radiotelephoning? can they have been radiotelephoning?
Interro-negative form
Simple form
can't I radiotelephone? can't you radiotelephone? can't he radiotelephone? can't we radiotelephone? can't you radiotelephone? can't they radiotelephone?
V-ing form
can't I be radiotelephoning? can't you be radiotelephoning? can't he be radiotelephoning? can't we be radiotelephoning? can't you be radiotelephoning? can't they be radiotelephoning?
Perfect
can't I have radiotelephoned? can't you have radiotelephoned? can't he have radiotelephoned? can't we have radiotelephoned? can't you have radiotelephoned? can't they have radiotelephoned?
V-ing perfect
can't I have been radiotelephoning? can't you have been radiotelephoning? can't he have been radiotelephoning? can't we have been radiotelephoning? can't you have been radiotelephoning? can't they have been radiotelephoning?