I can quarantine you can quarantine she can quarantine we can quarantine you can quarantine they can quarantine
V-ing form
I can be quarantining you can be quarantining she can be quarantining we can be quarantining you can be quarantining they can be quarantining
Perfect
I can have quarantined you can have quarantined she can have quarantined we can have quarantined you can have quarantined they can have quarantined
V-ing perfect
I can have been quarantining you can have been quarantining she can have been quarantining we can have been quarantining you can have been quarantining they can have been quarantining
Negation
Simple form
I can't quarantine you can't quarantine she can't quarantine we can't quarantine you can't quarantine they can't quarantine
V-ing form
I can't be quarantining you can't be quarantining she can't be quarantining we can't be quarantining you can't be quarantining they can't be quarantining
Perfect
I can't have quarantined you can't have quarantined she can't have quarantined we can't have quarantined you can't have quarantined they can't have quarantined
V-ing perfect
I can't have been quarantining you can't have been quarantining she can't have been quarantining we can't have been quarantining you can't have been quarantining they can't have been quarantining
Interrogative form
Simple form
can I quarantine? can you quarantine? can she quarantine? can we quarantine? can you quarantine? can they quarantine?
V-ing form
can I be quarantining? can you be quarantining? can she be quarantining? can we be quarantining? can you be quarantining? can they be quarantining?
Perfect
can I have quarantined? can you have quarantined? can she have quarantined? can we have quarantined? can you have quarantined? can they have quarantined?
V-ing perfect
can I have been quarantining? can you have been quarantining? can she have been quarantining? can we have been quarantining? can you have been quarantining? can they have been quarantining?
Interro-negative form
Simple form
can't I quarantine? can't you quarantine? can't she quarantine? can't we quarantine? can't you quarantine? can't they quarantine?
V-ing form
can't I be quarantining? can't you be quarantining? can't she be quarantining? can't we be quarantining? can't you be quarantining? can't they be quarantining?
Perfect
can't I have quarantined? can't you have quarantined? can't she have quarantined? can't we have quarantined? can't you have quarantined? can't they have quarantined?
V-ing perfect
can't I have been quarantining? can't you have been quarantining? can't she have been quarantining? can't we have been quarantining? can't you have been quarantining? can't they have been quarantining?