I must afforest you must afforest he must afforest we must afforest you must afforest they must afforest
V-ing form
I must be afforesting you must be afforesting he must be afforesting we must be afforesting you must be afforesting they must be afforesting
Perfect
I must have afforested you must have afforested he must have afforested we must have afforested you must have afforested they must have afforested
V-ing perfect
I must have been afforesting you must have been afforesting he must have been afforesting we must have been afforesting you must have been afforesting they must have been afforesting
Negation
Simple form
I mustn't afforest you mustn't afforest he mustn't afforest we mustn't afforest you mustn't afforest they mustn't afforest
V-ing form
I mustn't be afforesting you mustn't be afforesting he mustn't be afforesting we mustn't be afforesting you mustn't be afforesting they mustn't be afforesting
Perfect
I mustn't have afforested you mustn't have afforested he mustn't have afforested we mustn't have afforested you mustn't have afforested they mustn't have afforested
V-ing perfect
I mustn't have been afforesting you mustn't have been afforesting he mustn't have been afforesting we mustn't have been afforesting you mustn't have been afforesting they mustn't have been afforesting
Interrogative form
Simple form
must I afforest? must you afforest? must he afforest? must we afforest? must you afforest? must they afforest?
V-ing form
must I be afforesting? must you be afforesting? must he be afforesting? must we be afforesting? must you be afforesting? must they be afforesting?
Perfect
must I have afforested? must you have afforested? must he have afforested? must we have afforested? must you have afforested? must they have afforested?
V-ing perfect
must I have been afforesting? must you have been afforesting? must he have been afforesting? must we have been afforesting? must you have been afforesting? must they have been afforesting?
Interro-negative form
Simple form
mustn't I afforest? mustn't you afforest? mustn't he afforest? mustn't we afforest? mustn't you afforest? mustn't they afforest?
V-ing form
mustn't I be afforesting? mustn't you be afforesting? mustn't he be afforesting? mustn't we be afforesting? mustn't you be afforesting? mustn't they be afforesting?
Perfect
mustn't I have afforested? mustn't you have afforested? mustn't he have afforested? mustn't we have afforested? mustn't you have afforested? mustn't they have afforested?
V-ing perfect
mustn't I have been afforesting? mustn't you have been afforesting? mustn't he have been afforesting? mustn't we have been afforesting? mustn't you have been afforesting? mustn't they have been afforesting?