I could geometrise you could geometrise she could geometrise we could geometrise you could geometrise they could geometrise
V-ing form
I could be geometrising you could be geometrising she could be geometrising we could be geometrising you could be geometrising they could be geometrising
Perfect
I could have geometrised you could have geometrised she could have geometrised we could have geometrised you could have geometrised they could have geometrised
V-ing perfect
I could have been geometrising you could have been geometrising she could have been geometrising we could have been geometrising you could have been geometrising they could have been geometrising
Negation
Simple form
I could not geometrise you could not geometrise she could not geometrise we could not geometrise you could not geometrise they could not geometrise
V-ing form
I could not be geometrising you could not be geometrising she could not be geometrising we could not be geometrising you could not be geometrising they could not be geometrising
Perfect
I could not have geometrised you could not have geometrised she could not have geometrised we could not have geometrised you could not have geometrised they could not have geometrised
V-ing perfect
I could not have been geometrising you could not have been geometrising she could not have been geometrising we could not have been geometrising you could not have been geometrising they could not have been geometrising
Interrogative form
Simple form
could I geometrise? could you geometrise? could she geometrise? could we geometrise? could you geometrise? could they geometrise?
V-ing form
could I be geometrising? could you be geometrising? could she be geometrising? could we be geometrising? could you be geometrising? could they be geometrising?
Perfect
could I have geometrised? could you have geometrised? could she have geometrised? could we have geometrised? could you have geometrised? could they have geometrised?
V-ing perfect
could I have been geometrising? could you have been geometrising? could she have been geometrising? could we have been geometrising? could you have been geometrising? could they have been geometrising?
Interro-negative form
Simple form
could I not geometrise? could you not geometrise? could she not geometrise? could we not geometrise? could you not geometrise? could they not geometrise?
V-ing form
could I not be geometrising? could you not be geometrising? could she not be geometrising? could we not be geometrising? could you not be geometrising? could they not be geometrising?
Perfect
could I not have geometrised? could you not have geometrised? could she not have geometrised? could we not have geometrised? could you not have geometrised? could they not have geometrised?
V-ing perfect
could I not have been geometrising? could you not have been geometrising? could she not have been geometrising? could we not have been geometrising? could you not have been geometrising? could they not have been geometrising?