-er -ey eee eef eeo eep eer eet eex eey ef- efe eff efi efo efp efr eft efx eie eif eii eio eip eir eit eix eo- eoe eof eoi eoo eop eor eot ep- epe epf epi epo epp epr ept epx ere erf eri ero erp err ert ery ete etf eti eto etp etr ett etx ety ex- exe exi exo exp exr ext exx exy eye eyo eyp eyr eyt fee fef fei feo fep fer fet fex fey ffe fff ffi ffo ffp ffr fft ffx ffy fie fif fii fip fir fit fix foe fof foi foo fop for fot fox foy fpe fpi fpo fpp fpr fpt fpx fpy fre frf fri fro frp frr frt fry fte ftf fti fto ftp ftr ftt ftx fty fxe fxi fxp fxr fxt fxx fy- fye fyi fyo fyp i-f ie- iee ief iei iep ier iet iex iey ife iff ifi ifo ifp ifr ift ifx ify iie iif iii iio iip iir iit iix io- ioe iof ioi ioo iop ior iot ipe ipf ipi ipo ipp ipr ipt ipx ipy ir- ire irf iri iro irp irr irt irx iry ite itf iti ito itp itt itx ity ixe ixi ixy iye iyo iyr iyt iyy o-i oee oef oei oeo oep oer oet oex oey of- ofe off ofi ofo ofp ofr oft ofx oie oif oii oio oip oir oit oo- oof ooi ooo oop oor oot oox op- ope opf opi opo opp opr opt opx opy or- ore orf ori oro orp orr ort orx ory ot- ote otf oti oto otp otr ott ox- oxf oxi oxo oxt oxx oxy oye oyi oyo p-p pee pef pei peo pep per pet pex pey pfe pff pfi pfo pfp pfr pft pfx pfy pie pif pii pio pip pir pit pix poe pof poi poo pop por pot pox poy ppe ppf ppi ppo ppp ppr ppt ppx pre prf pri pro prp prr prt prx pry pt- pte ptf pti pto ptp ptr ptt ptx pty pxe pxr pxt py- pye pyf pyo pyr pyt pyx re- ree ref rei reo rep rer ret rex rey rfe rff rfi rfo rfp rfr rft rie rif rii rio rip rir rit rix riy roe rof roi roo rop ror rot rox roy rpe rpf rpi rpo rpp rpr rpt rpx rrf rri rrp rrr rrt rte rtf rti rto rtp rtr rtt rtx rty rxp rxr ry- rye ryf ryo ryr ryy t-x te- tee tef tei teo tep ter tet tex tey tfe tff tfi tfo tfp tfr tft tfx tie tif tii tio tip tir tit tix tiy to- toe tof toi too top tor tot tox toy tpe tpf tpi tpo tpp tpr tpt tpx tre trf tri tro trp trr trt trx try tte ttf tti tto ttp ttr ttt ttx tty txe txf txi txt tye tyf tyo typ tyr tyt xee xep xer xet xex xfe xft xfx xie xii xio xit xix xof xoi xoo xop xor xot xox xpe xpf xpo xpp xpt xrf xrt xrx xry xtf xti xtp xtr xtx xty xxi xxo xxp xxx xxy xyp xyr xyy yee yef yei yeo yep yer yet yex yey yfe yff yfr yft yie yif yii yio yip yir yit yoe yof yoi yoo yop yor yot yox yoy ypf ypo yre yrf yro yrp yrt yte ytf yto ytp ytr ytt yxe yxy yye yyf yyt yyy