-er a-a a-i a-z aaa aae aaf aai aao aap aar aaz aea aee aef aei aeo aep aer aez af- afa afe aff afi afo afp afr afz ai- aia aie aif aii aio aip air aiz aoa aoe aof aoi aoo aop aor ap- apa ape apf api apo app apr ar- ara are arf ari aro arp arr arz az- aza aze azf azi azo azp azz eaa eae eaf eai eao eap ear eaz eea eee eef eeo eep eer ef- efa efe eff efi efo efp efr eia eie eif eii eio eip eir eo- eoa eoe eof eoi eoo eop eor ep- epa epe epf epi epo epp epr epz era ere erf eri ero erp err erz eze ezf ezo ezr ezz faa fae faf fai fao fap far faz fea fee fef fei feo fep fer fez ffa ffe fff ffi ffo ffp ffr ffz fia fie fif fii fip fir fiz foa foe fof foi foo fop for foz fpa fpe fpi fpo fpp fpr fra fre frf fri fro frp frr i-f ia- iaa iae iaf iai iao iap iar iaz ie- iea iee ief iei iep ier ifa ife iff ifi ifo ifp ifr ifz iia iie iif iii iio iip iir io- ioa ioe iof ioi ioo iop ior ipa ipe ipf ipi ipo ipp ipr ir- ira ire irf iri iro irp irr iza ize izi izo izz o-i oaa oae oaf oai oao oap oar oea oee oef oei oeo oep oer of- ofa ofe off ofi ofo ofp ofr ofz oia oie oif oii oio oip oir oiz oo- ooa oof ooi ooo oop oor op- opa ope opf opi opo opp opr or- ora ore orf ori oro orp orr orz oza oze ozo ozz p-p paa pae paf pai pao pap par paz pea pee pef pei peo pep per pez pfa pfe pff pfi pfo pfp pfr pia pie pif pii pio pip pir piz poa poe pof poi poo pop por poz ppa ppe ppf ppi ppo ppp ppr ppz pra pre prf pri pro prp prr prz pzp ra- raa rae raf rai rao rap rar raz re- rea ree ref rei reo rep rer rez rfa rfe rff rfi rfo rfp rfr rfz ria rie rif rii rio rip rir riz roa roe rof roi roo rop ror roz rpa rpe rpf rpi rpo rpp rpr rpz rra rrf rri rrp rrr rza rze rzo zaa zaf zai zao zap zar zaz zea zee zef zeo zep zer zez zfa zfr zia zie zif zio zip zir ziz zo- zoa zoe zof zoi zoo zor zpe zpf zpi zpo zpp zpr zro zrp zzr zzz