-er eee eem een eep eer eet eex eie eii eim ein eip eir eit eix em- eme emi emm emn emp emr emt emx en- ene eni enm enn enp enr ent ep- epe epi epm epn epp epr ept epx ere eri erm ern erp err ert ete eti etm etn etp etr ett etx ex- exe exi exp exr ext exx ie- iee iei iem ien iep ier iet iex iie iii iim iin iip iir iit iix im- ime imi imm imn imp imt imx in- ine ini inm inn inp inr int inx ipe ipi ipm ipn ipp ipr ipt ipx ir- ire iri irm irn irp irr irt irx ite iti itm itn itp itt itx ixe ixi ixn m-r mee mei mem men mep mer met mex mi- mie mii mim min mip mir mit mix mme mmi mmm mmn mmp mmr mmt mmx mne mni mnm mnn mnp mnr mnt mpe mpi mpm mpn mpp mpr mpt mpx mre mri mrm mrn mrp mrr mrt mrx mte mti mtm mtn mtp mtr mtt mtx mxi mxn mxp mxr n-i ne- nee nei nem nen nep ner net nex nie nii nim nin nip nir nit nix nme nmi nmm nmn nmp nmr nmt nne nni nnm nnn nnp nnt npe npi npm npn npp npr npt nre nri nrm nrn nrp nrr nrt nrx nte nti ntm ntn ntp ntr ntt ntx nxt p-p pee pei pem pen pep per pet pex pie pii pim pin pip pir pit pix pme pmi pmm pmn pmp pmr pmt pmx pn- pne pni pnm pnn pnp pnr pnt pnx ppe ppi ppm ppn ppp ppr ppt ppx pre pri prm prn prp prr prt prx pt- pte pti ptm ptn ptp ptr ptt ptx pxe pxm pxr pxt re- ree rei rem ren rep rer ret rex rie rii rim rin rip rir rit rix rme rmi rmm rmn rmp rmr rmt rmx rni rnm rnn rnp rnr rnt rpe rpi rpm rpn rpp rpr rpt rpx rri rrm rrn rrp rrr rrt rte rti rtm rtn rtp rtr rtt rtx rxp rxr t-x te- tee tei tem ten tep ter tet tex tie tii tim tin tip tir tit tix tme tmi tmm tmn tmp tmr tmt tmx tne tni tnm tnn tnp tnr tnt tnx tpe tpi tpm tpn tpp tpr tpt tpx tre tri trm trn trp trr trt trx tte tti ttm ttn ttp ttr ttt ttx txe txi txn txt xee xem xen xep xer xet xex xie xii xin xit xix xmi xmm xmp xmr xmt xmx xpe xpm xpn xpp xpt xrt xrx xti xtm xtp xtr xtx xxi xxp xxx