Regular verb: retrace - retraced - retraced
Simple form | V-ing form |
I could retrace you could retrace he could retrace we could retrace you could retrace they could retrace | I could be retracing you could be retracing he could be retracing we could be retracing you could be retracing they could be retracing |
Perfect | V-ing perfect |
I could have retraced you could have retraced he could have retraced we could have retraced you could have retraced they could have retraced | I could have been retracing you could have been retracing he could have been retracing we could have been retracing you could have been retracing they could have been retracing |
Simple form | V-ing form |
I couldn't retrace you couldn't retrace he couldn't retrace we couldn't retrace you couldn't retrace they couldn't retrace | I couldn't be retracing you couldn't be retracing he couldn't be retracing we couldn't be retracing you couldn't be retracing they couldn't be retracing |
Perfect | V-ing perfect |
I couldn't have retraced you couldn't have retraced he couldn't have retraced we couldn't have retraced you couldn't have retraced they couldn't have retraced | I couldn't have been retracing you couldn't have been retracing he couldn't have been retracing we couldn't have been retracing you couldn't have been retracing they couldn't have been retracing |
Simple form | V-ing form |
could I retrace? could you retrace? could he retrace? could we retrace? could you retrace? could they retrace? | could I be retracing? could you be retracing? could he be retracing? could we be retracing? could you be retracing? could they be retracing? |
Perfect | V-ing perfect |
could I have retraced? could you have retraced? could he have retraced? could we have retraced? could you have retraced? could they have retraced? | could I have been retracing? could you have been retracing? could he have been retracing? could we have been retracing? could you have been retracing? could they have been retracing? |
Simple form | V-ing form |
couldn't I retrace? couldn't you retrace? couldn't he retrace? couldn't we retrace? couldn't you retrace? couldn't they retrace? | couldn't I be retracing? couldn't you be retracing? couldn't he be retracing? couldn't we be retracing? couldn't you be retracing? couldn't they be retracing? |
Perfect | V-ing perfect |
couldn't I have retraced? couldn't you have retraced? couldn't he have retraced? couldn't we have retraced? couldn't you have retraced? couldn't they have retraced? | couldn't I have been retracing? couldn't you have been retracing? couldn't he have been retracing? couldn't we have been retracing? couldn't you have been retracing? couldn't they have been retracing? |