Regular verb: backsolve - backsolved - backsolved
Simple form | V-ing form |
I must backsolve you must backsolve he must backsolve we must backsolve you must backsolve they must backsolve | I must be backsolving you must be backsolving he must be backsolving we must be backsolving you must be backsolving they must be backsolving |
Perfect | V-ing perfect |
I must have backsolved you must have backsolved he must have backsolved we must have backsolved you must have backsolved they must have backsolved | I must have been backsolving you must have been backsolving he must have been backsolving we must have been backsolving you must have been backsolving they must have been backsolving |
Simple form | V-ing form |
I mustn't backsolve you mustn't backsolve he mustn't backsolve we mustn't backsolve you mustn't backsolve they mustn't backsolve | I mustn't be backsolving you mustn't be backsolving he mustn't be backsolving we mustn't be backsolving you mustn't be backsolving they mustn't be backsolving |
Perfect | V-ing perfect |
I mustn't have backsolved you mustn't have backsolved he mustn't have backsolved we mustn't have backsolved you mustn't have backsolved they mustn't have backsolved | I mustn't have been backsolving you mustn't have been backsolving he mustn't have been backsolving we mustn't have been backsolving you mustn't have been backsolving they mustn't have been backsolving |
Simple form | V-ing form |
must I backsolve? must you backsolve? must he backsolve? must we backsolve? must you backsolve? must they backsolve? | must I be backsolving? must you be backsolving? must he be backsolving? must we be backsolving? must you be backsolving? must they be backsolving? |
Perfect | V-ing perfect |
must I have backsolved? must you have backsolved? must he have backsolved? must we have backsolved? must you have backsolved? must they have backsolved? | must I have been backsolving? must you have been backsolving? must he have been backsolving? must we have been backsolving? must you have been backsolving? must they have been backsolving? |
Simple form | V-ing form |
mustn't I backsolve? mustn't you backsolve? mustn't he backsolve? mustn't we backsolve? mustn't you backsolve? mustn't they backsolve? | mustn't I be backsolving? mustn't you be backsolving? mustn't he be backsolving? mustn't we be backsolving? mustn't you be backsolving? mustn't they be backsolving? |
Perfect | V-ing perfect |
mustn't I have backsolved? mustn't you have backsolved? mustn't he have backsolved? mustn't we have backsolved? mustn't you have backsolved? mustn't they have backsolved? | mustn't I have been backsolving? mustn't you have been backsolving? mustn't he have been backsolving? mustn't we have been backsolving? mustn't you have been backsolving? mustn't they have been backsolving? |