Regular verb: billow - billowed - billowed
Simple form | V-ing form |
I must billow you must billow she must billow we must billow you must billow they must billow | I must be billowing you must be billowing she must be billowing we must be billowing you must be billowing they must be billowing |
Perfect | V-ing perfect |
I must have billowed you must have billowed she must have billowed we must have billowed you must have billowed they must have billowed | I must have been billowing you must have been billowing she must have been billowing we must have been billowing you must have been billowing they must have been billowing |
Simple form | V-ing form |
I must not billow you must not billow she must not billow we must not billow you must not billow they must not billow | I must not be billowing you must not be billowing she must not be billowing we must not be billowing you must not be billowing they must not be billowing |
Perfect | V-ing perfect |
I must not have billowed you must not have billowed she must not have billowed we must not have billowed you must not have billowed they must not have billowed | I must not have been billowing you must not have been billowing she must not have been billowing we must not have been billowing you must not have been billowing they must not have been billowing |
Simple form | V-ing form |
must I billow? must you billow? must she billow? must we billow? must you billow? must they billow? | must I be billowing? must you be billowing? must she be billowing? must we be billowing? must you be billowing? must they be billowing? |
Perfect | V-ing perfect |
must I have billowed? must you have billowed? must she have billowed? must we have billowed? must you have billowed? must they have billowed? | must I have been billowing? must you have been billowing? must she have been billowing? must we have been billowing? must you have been billowing? must they have been billowing? |
Simple form | V-ing form |
must I not billow? must you not billow? must she not billow? must we not billow? must you not billow? must they not billow? | must I not be billowing? must you not be billowing? must she not be billowing? must we not be billowing? must you not be billowing? must they not be billowing? |
Perfect | V-ing perfect |
must I not have billowed? must you not have billowed? must she not have billowed? must we not have billowed? must you not have billowed? must they not have billowed? | must I not have been billowing? must you not have been billowing? must she not have been billowing? must we not have been billowing? must you not have been billowing? must they not have been billowing? |