English verb conjugation
MAY CRYSTALLISE

Regular verb: crystallise - crystallised - crystallised

Affirmation

Simple form	V-ing form
I may crystallise you may crystallise he may crystallise we may crystallise you may crystallise they may crystallise	I may be crystallising you may be crystallising he may be crystallising we may be crystallising you may be crystallising they may be crystallising
Perfect	V-ing perfect
I may have crystallised you may have crystallised he may have crystallised we may have crystallised you may have crystallised they may have crystallised	I may have been crystallising you may have been crystallising he may have been crystallising we may have been crystallising you may have been crystallising they may have been crystallising

Negation

Simple form	V-ing form
I mayn't crystallise you mayn't crystallise he mayn't crystallise we mayn't crystallise you mayn't crystallise they mayn't crystallise	I mayn't be crystallising you mayn't be crystallising he mayn't be crystallising we mayn't be crystallising you mayn't be crystallising they mayn't be crystallising
Perfect	V-ing perfect
I mayn't have crystallised you mayn't have crystallised he mayn't have crystallised we mayn't have crystallised you mayn't have crystallised they mayn't have crystallised	I mayn't have been crystallising you mayn't have been crystallising he mayn't have been crystallising we mayn't have been crystallising you mayn't have been crystallising they mayn't have been crystallising

Interrogative form

Simple form	V-ing form
may I crystallise? may you crystallise? may he crystallise? may we crystallise? may you crystallise? may they crystallise?	may I be crystallising? may you be crystallising? may he be crystallising? may we be crystallising? may you be crystallising? may they be crystallising?
Perfect	V-ing perfect
may I have crystallised? may you have crystallised? may he have crystallised? may we have crystallised? may you have crystallised? may they have crystallised?	may I have been crystallising? may you have been crystallising? may he have been crystallising? may we have been crystallising? may you have been crystallising? may they have been crystallising?

Interro-negative form

Simple form	V-ing form
mayn't I crystallise? mayn't you crystallise? mayn't he crystallise? mayn't we crystallise? mayn't you crystallise? mayn't they crystallise?	mayn't I be crystallising? mayn't you be crystallising? mayn't he be crystallising? mayn't we be crystallising? mayn't you be crystallising? mayn't they be crystallising?
Perfect	V-ing perfect
mayn't I have crystallised? mayn't you have crystallised? mayn't he have crystallised? mayn't we have crystallised? mayn't you have crystallised? mayn't they have crystallised?	mayn't I have been crystallising? mayn't you have been crystallising? mayn't he have been crystallising? mayn't we have been crystallising? mayn't you have been crystallising? mayn't they have been crystallising?