Regular verb: stem - stemmed - stemmed
Simple form | V-ing form |
I can stem you can stem he can stem we can stem you can stem they can stem | I can be stemming you can be stemming he can be stemming we can be stemming you can be stemming they can be stemming |
Perfect | V-ing perfect |
I can have stemmed you can have stemmed he can have stemmed we can have stemmed you can have stemmed they can have stemmed | I can have been stemming you can have been stemming he can have been stemming we can have been stemming you can have been stemming they can have been stemming |
Simple form | V-ing form |
I cannot stem you cannot stem he cannot stem we cannot stem you cannot stem they cannot stem | I cannot be stemming you cannot be stemming he cannot be stemming we cannot be stemming you cannot be stemming they cannot be stemming |
Perfect | V-ing perfect |
I cannot have stemmed you cannot have stemmed he cannot have stemmed we cannot have stemmed you cannot have stemmed they cannot have stemmed | I cannot have been stemming you cannot have been stemming he cannot have been stemming we cannot have been stemming you cannot have been stemming they cannot have been stemming |
Simple form | V-ing form |
can I stem? can you stem? can he stem? can we stem? can you stem? can they stem? | can I be stemming? can you be stemming? can he be stemming? can we be stemming? can you be stemming? can they be stemming? |
Perfect | V-ing perfect |
can I have stemmed? can you have stemmed? can he have stemmed? can we have stemmed? can you have stemmed? can they have stemmed? | can I have been stemming? can you have been stemming? can he have been stemming? can we have been stemming? can you have been stemming? can they have been stemming? |
Simple form | V-ing form |
can I not stem? can you not stem? can he not stem? can we not stem? can you not stem? can they not stem? | can I not be stemming? can you not be stemming? can he not be stemming? can we not be stemming? can you not be stemming? can they not be stemming? |
Perfect | V-ing perfect |
can I not have stemmed? can you not have stemmed? can he not have stemmed? can we not have stemmed? can you not have stemmed? can they not have stemmed? | can I not have been stemming? can you not have been stemming? can he not have been stemming? can we not have been stemming? can you not have been stemming? can they not have been stemming? |