I could launder you could launder she could launder we could launder you could launder they could launder
V-ing form
I could be laundering you could be laundering she could be laundering we could be laundering you could be laundering they could be laundering
Perfect
I could have laundered you could have laundered she could have laundered we could have laundered you could have laundered they could have laundered
V-ing perfect
I could have been laundering you could have been laundering she could have been laundering we could have been laundering you could have been laundering they could have been laundering
Negation
Simple form
I couldn't launder you couldn't launder she couldn't launder we couldn't launder you couldn't launder they couldn't launder
V-ing form
I couldn't be laundering you couldn't be laundering she couldn't be laundering we couldn't be laundering you couldn't be laundering they couldn't be laundering
Perfect
I couldn't have laundered you couldn't have laundered she couldn't have laundered we couldn't have laundered you couldn't have laundered they couldn't have laundered
V-ing perfect
I couldn't have been laundering you couldn't have been laundering she couldn't have been laundering we couldn't have been laundering you couldn't have been laundering they couldn't have been laundering
Interrogative form
Simple form
could I launder? could you launder? could she launder? could we launder? could you launder? could they launder?
V-ing form
could I be laundering? could you be laundering? could she be laundering? could we be laundering? could you be laundering? could they be laundering?
Perfect
could I have laundered? could you have laundered? could she have laundered? could we have laundered? could you have laundered? could they have laundered?
V-ing perfect
could I have been laundering? could you have been laundering? could she have been laundering? could we have been laundering? could you have been laundering? could they have been laundering?
Interro-negative form
Simple form
couldn't I launder? couldn't you launder? couldn't she launder? couldn't we launder? couldn't you launder? couldn't they launder?
V-ing form
couldn't I be laundering? couldn't you be laundering? couldn't she be laundering? couldn't we be laundering? couldn't you be laundering? couldn't they be laundering?
Perfect
couldn't I have laundered? couldn't you have laundered? couldn't she have laundered? couldn't we have laundered? couldn't you have laundered? couldn't they have laundered?
V-ing perfect
couldn't I have been laundering? couldn't you have been laundering? couldn't she have been laundering? couldn't we have been laundering? couldn't you have been laundering? couldn't they have been laundering?