case Wigley against blackwal if a condition consist of two part one of which  be not possible that part which be possible ought to be perform Edward pl    roll ab lev   light a wood con trespass the defendant plead a feoff from the  plaintiff the plaintiff show that it be upon condition that if he pay l at  such a day and l for every fodder of lead which shall he deliver unto he by  the feoff or his mean and shall make a sufficient lease for oneandtwenty year  of blackacre parcel thereof that the feoff shall he void and show the payment  of the l and that the feoff have deliver so many fodders of lead and that he  have pay l for every fodder and that blackacre be parcel of the land whereof  the feoff be make wherein the feoff yet continue in possession and so he can  not make a lease thereof and that have perform all the condition he enter c  whereupon it be demurrer first because it be not show that he pay for the lead  deliver he by the feoff mean for that he ought to have do as well as for the  lead deliver he by the feoff himself which be hold to be a manifest fault  second because it be not allege that the lease of blackacre be make c for  although he can make a good lease yet he ought to make a leaseby indenture  which shall be good by estoppel Popham and Clench hold that he need not to  allege the performance of that part of the condition for it be impossible to  he perform and if he perform that part which be possible to he perform it  suffice for when a condition consist croak Elizabeth er p of two part and the  one part be possible to he perform and the other not this be a good condition  if he perform that part of the condition which be possible it suffice but if  the condition he altogether impossible it be void and here he can make a  sufficient lease for the feoff be always seize and it be not intend that he  shall make a lease by estoppel the word be that he shall make a sufficient  lease wherefore c but for the first point it be adjudge against the plaintiff