I may preguarantee you may preguarantee he may preguarantee we may preguarantee you may preguarantee they may preguarantee
V-ing form
I may be preguaranteeing you may be preguaranteeing he may be preguaranteeing we may be preguaranteeing you may be preguaranteeing they may be preguaranteeing
Perfect
I may have preguaranteed you may have preguaranteed he may have preguaranteed we may have preguaranteed you may have preguaranteed they may have preguaranteed
V-ing perfect
I may have been preguaranteeing you may have been preguaranteeing he may have been preguaranteeing we may have been preguaranteeing you may have been preguaranteeing they may have been preguaranteeing
Negation
Simple form
I mayn't preguarantee you mayn't preguarantee he mayn't preguarantee we mayn't preguarantee you mayn't preguarantee they mayn't preguarantee
V-ing form
I mayn't be preguaranteeing you mayn't be preguaranteeing he mayn't be preguaranteeing we mayn't be preguaranteeing you mayn't be preguaranteeing they mayn't be preguaranteeing
Perfect
I mayn't have preguaranteed you mayn't have preguaranteed he mayn't have preguaranteed we mayn't have preguaranteed you mayn't have preguaranteed they mayn't have preguaranteed
V-ing perfect
I mayn't have been preguaranteeing you mayn't have been preguaranteeing he mayn't have been preguaranteeing we mayn't have been preguaranteeing you mayn't have been preguaranteeing they mayn't have been preguaranteeing
Interrogative form
Simple form
may I preguarantee? may you preguarantee? may he preguarantee? may we preguarantee? may you preguarantee? may they preguarantee?
V-ing form
may I be preguaranteeing? may you be preguaranteeing? may he be preguaranteeing? may we be preguaranteeing? may you be preguaranteeing? may they be preguaranteeing?
Perfect
may I have preguaranteed? may you have preguaranteed? may he have preguaranteed? may we have preguaranteed? may you have preguaranteed? may they have preguaranteed?
V-ing perfect
may I have been preguaranteeing? may you have been preguaranteeing? may he have been preguaranteeing? may we have been preguaranteeing? may you have been preguaranteeing? may they have been preguaranteeing?
Interro-negative form
Simple form
mayn't I preguarantee? mayn't you preguarantee? mayn't he preguarantee? mayn't we preguarantee? mayn't you preguarantee? mayn't they preguarantee?
V-ing form
mayn't I be preguaranteeing? mayn't you be preguaranteeing? mayn't he be preguaranteeing? mayn't we be preguaranteeing? mayn't you be preguaranteeing? mayn't they be preguaranteeing?
Perfect
mayn't I have preguaranteed? mayn't you have preguaranteed? mayn't he have preguaranteed? mayn't we have preguaranteed? mayn't you have preguaranteed? mayn't they have preguaranteed?
V-ing perfect
mayn't I have been preguaranteeing? mayn't you have been preguaranteeing? mayn't he have been preguaranteeing? mayn't we have been preguaranteeing? mayn't you have been preguaranteeing? mayn't they have been preguaranteeing?