I may thicken you may thicken she may thicken we may thicken you may thicken they may thicken
V-ing form
I may be thickening you may be thickening she may be thickening we may be thickening you may be thickening they may be thickening
Perfect
I may have thickened you may have thickened she may have thickened we may have thickened you may have thickened they may have thickened
V-ing perfect
I may have been thickening you may have been thickening she may have been thickening we may have been thickening you may have been thickening they may have been thickening
Negation
Simple form
I mayn't thicken you mayn't thicken she mayn't thicken we mayn't thicken you mayn't thicken they mayn't thicken
V-ing form
I mayn't be thickening you mayn't be thickening she mayn't be thickening we mayn't be thickening you mayn't be thickening they mayn't be thickening
Perfect
I mayn't have thickened you mayn't have thickened she mayn't have thickened we mayn't have thickened you mayn't have thickened they mayn't have thickened
V-ing perfect
I mayn't have been thickening you mayn't have been thickening she mayn't have been thickening we mayn't have been thickening you mayn't have been thickening they mayn't have been thickening
Interrogative form
Simple form
may I thicken? may you thicken? may she thicken? may we thicken? may you thicken? may they thicken?
V-ing form
may I be thickening? may you be thickening? may she be thickening? may we be thickening? may you be thickening? may they be thickening?
Perfect
may I have thickened? may you have thickened? may she have thickened? may we have thickened? may you have thickened? may they have thickened?
V-ing perfect
may I have been thickening? may you have been thickening? may she have been thickening? may we have been thickening? may you have been thickening? may they have been thickening?
Interro-negative form
Simple form
mayn't I thicken? mayn't you thicken? mayn't she thicken? mayn't we thicken? mayn't you thicken? mayn't they thicken?
V-ing form
mayn't I be thickening? mayn't you be thickening? mayn't she be thickening? mayn't we be thickening? mayn't you be thickening? mayn't they be thickening?
Perfect
mayn't I have thickened? mayn't you have thickened? mayn't she have thickened? mayn't we have thickened? mayn't you have thickened? mayn't they have thickened?
V-ing perfect
mayn't I have been thickening? mayn't you have been thickening? mayn't she have been thickening? mayn't we have been thickening? mayn't you have been thickening? mayn't they have been thickening?