I must carbonate you must carbonate she must carbonate we must carbonate you must carbonate they must carbonate
V-ing form
I must be carbonating you must be carbonating she must be carbonating we must be carbonating you must be carbonating they must be carbonating
Perfect
I must have carbonated you must have carbonated she must have carbonated we must have carbonated you must have carbonated they must have carbonated
V-ing perfect
I must have been carbonating you must have been carbonating she must have been carbonating we must have been carbonating you must have been carbonating they must have been carbonating
Negation
Simple form
I must not carbonate you must not carbonate she must not carbonate we must not carbonate you must not carbonate they must not carbonate
V-ing form
I must not be carbonating you must not be carbonating she must not be carbonating we must not be carbonating you must not be carbonating they must not be carbonating
Perfect
I must not have carbonated you must not have carbonated she must not have carbonated we must not have carbonated you must not have carbonated they must not have carbonated
V-ing perfect
I must not have been carbonating you must not have been carbonating she must not have been carbonating we must not have been carbonating you must not have been carbonating they must not have been carbonating
Interrogative form
Simple form
must I carbonate? must you carbonate? must she carbonate? must we carbonate? must you carbonate? must they carbonate?
V-ing form
must I be carbonating? must you be carbonating? must she be carbonating? must we be carbonating? must you be carbonating? must they be carbonating?
Perfect
must I have carbonated? must you have carbonated? must she have carbonated? must we have carbonated? must you have carbonated? must they have carbonated?
V-ing perfect
must I have been carbonating? must you have been carbonating? must she have been carbonating? must we have been carbonating? must you have been carbonating? must they have been carbonating?
Interro-negative form
Simple form
must I not carbonate? must you not carbonate? must she not carbonate? must we not carbonate? must you not carbonate? must they not carbonate?
V-ing form
must I not be carbonating? must you not be carbonating? must she not be carbonating? must we not be carbonating? must you not be carbonating? must they not be carbonating?
Perfect
must I not have carbonated? must you not have carbonated? must she not have carbonated? must we not have carbonated? must you not have carbonated? must they not have carbonated?
V-ing perfect
must I not have been carbonating? must you not have been carbonating? must she not have been carbonating? must we not have been carbonating? must you not have been carbonating? must they not have been carbonating?