eee eem eep eie eii eim eip em- eme emi emm emp ep- epe epi epm epp epq eqe eqp eqq ie- iee iei iem iep iie iii iim iip im- ime imi imm imp ipe ipi ipm ipp iqe mee mei mem mep meq mi- mie mii mim mip miq mme mmi mmm mmp mpe mpi mpm mpp mpq mqi mqp p-p pee pei pem pep pie pii pim pip piq pme pmi pmm pmp pmq ppe ppi ppm ppp ppq pqi pqm pqq qee qem qep qie qip qme qmi qmp qpm qpp qqq