-er -ic a-a a-c a-i a-t a-z aaa aac aae aag aai aao aar aat aaz ac- aca acc ace acg aci aco acr act acz aea aec aee aeg aei aeo aer aet aez ag- aga agc age agg agi ago agr agt agz ai- aia aic aie aig aii aio air ait aiz aoa aoc aoe aog aoi aoo aor aot ar- ara arc are arg ari aro arr art arz at- ata atc ate atg ati ato atr att atz az- aza aze azg azi azo azt azz c-- caa cac cae cag cai cao car cat caz cca ccc cce ccg cci cco ccr cct ccz ce- cea cec cee ceg cei ceo cer cet cez cga cgc cge cgg cgi cgo cgr cgt ci- cia cic cie cig cii cio cir cit co- coa coc coe cog coi coo cor cot coz cra crc cre crg cri cro crr crt crz cta ctc cte ctg cti cto ctr ctt ctz cz- czc cze czo czt eaa eac eae eag eai eao ear eat eaz ec- eca ecc ece ecg eci eco ecr ect eea eec eee eeg eeo eer eet ega egc ege egg egi ego egr egt eia eic eie eig eii eio eir eit eo- eoa eoc eoe eog eoi eoo eor eot era erc ere erg eri ero err ert erz eta etc ete etg eti eto etr ett etz eze ezo ezr ezz gaa gac gae gag gai gao gar gat gaz gca gcc gce gcg gci gco gcr gct ge- gea gec gee geg gei geo ger get gez gga ggc ggg ggi ggo ggr ggt ggz gia gic gie gig gii gio gir git giz goa goc goe gog goi goo gor got goz gra grc gre grg gri gro grr grt gta gtc gte gtg gti gto gtr gtt gza gzo gzr ia- iaa iac iae iag iai iao iar iat iaz ica icc ice icg ici ico icr ict icz ie- iea iec iee ieg iei ier iet iga igc ige igg igi igo igr igt iia iic iie iii iio iir iit io- ioa ioc ioe iog ioi ioo ior iot ir- ira irc ire irg iri iro irr irt ita itc ite itg iti ito itt itz iza ize izi izo izz o-i oaa oac oae oag oai oao oar oat oc- oca occ ocg oci oco ocr oct ocz oea oec oee oeg oei oeo oer oet oga ogc oge ogg ogi ogo ogt oia oic oie oii oio oir oit oiz oo- ooa ooc oog ooi ooo oor oot or- ora orc ore org ori oro orr ort orz ot- ota otc ote otg oti oto otr ott otz oza oze ozo ozt ozz ra- raa rac rae rag rai rao rar rat raz rca rcc rce rcg rci rco rcr rct re- rea rec ree reg rei reo rer ret rez rga rgc rge rgg rgi rgo rgr rgt ria ric rie rig rii rio rir rit riz roa roc roe rog roi roo ror rot roz rra rrc rrg rri rrr rrt rta rtc rte rtg rti rto rtr rtt rtz rza rze rzo taa tac tae tag tai tao tar tat taz tca tcc tce tcg tci tco tcr tct te- tea tec tee teg tei teo ter tet tez tga tgc tge tgg tgi tgo tgr tgt tgz tia tic tie tig tii tio tir tit tiz to- toa toc toe tog toi too tor tot toz tra trc tre trg tri tro trr trt trz tta ttc tte ttg tti tto ttr ttt tza tze z-g zaa zac zag zai zao zar zat zaz zce zco zea zec zee zeo zer zet zez zgg zgi zia zie zig zio zir zit ziz zo- zoa zoc zoe zog zoi zoo zor zot zro zta zte ztr zzr zzt zzz