I can radiotelephone you can radiotelephone she can radiotelephone we can radiotelephone you can radiotelephone they can radiotelephone
V-ing form
I can be radiotelephoning you can be radiotelephoning she can be radiotelephoning we can be radiotelephoning you can be radiotelephoning they can be radiotelephoning
Perfect
I can have radiotelephoned you can have radiotelephoned she 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 she 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 she 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 she 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 she 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 she 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 she radiotelephone? can we radiotelephone? can you radiotelephone? can they radiotelephone?
V-ing form
can I be radiotelephoning? can you be radiotelephoning? can she be radiotelephoning? can we be radiotelephoning? can you be radiotelephoning? can they be radiotelephoning?
Perfect
can I have radiotelephoned? can you have radiotelephoned? can she 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 she 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 she 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 she 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 she 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 she have been radiotelephoning? can't we have been radiotelephoning? can't you have been radiotelephoning? can't they have been radiotelephoning?