eeee eiei eier eime eimi eipr eire emer emii emim emir emme emmi empe empi emre epee eper epi- epie epip eppp eprp erei erem erer erie erim erme erpe erre ieie ieme iere ieri iiie iiii iipm imep imer imir imme immi impi impr imre imri imrr iper ipie ipmi ipmp ippr ipri iree irem irer iri- irie irip irpe irre irri meem meep meer meir meme memr mepe mer- mere meri merm merp miee miem miep mier miii mim- mime mimi mimp mipi mipr mire miri mirr mmii mmmm mmpi mmpr mmrp mpie mpir mppe mppp mpri mprp mree peep peer peip peir pepe pepi per- pere peri perm perp perr piem piep pier piip pime pimi pimp pipe pipi pipp pire piri pirr pmip pmmp pmpm pper ppie pppp pprm pre- pree prem prep pri- prie prii prim prri prrm reem reep reii reim reir reme remi remp repe repi repp repr rere reri riem riep rier rime rimi rimm ripe ripi ripp ripr rire riri rmrp rpii rrmp rrrr