-er -ic a-a a-c a-i a-t aaa aac aae aag aai aak aan aar aat ac- aca acc ace acg aci ack acn acr act aea aec aee aeg aei aek aen aer aet ag- aga agc age agg agi agk agn agr agt ai- aia aic aie aig aii aik ain air ait aka akc ake akg aki akk akn akr an- ana anc ane ang ani ank ann anr ant ar- ara arc are arg ari ark arn arr art at- ata atc ate atg ati atn atr att c-- caa cac cae cag cai cak can car cat cca ccc cce ccg cci cck ccn ccr cct ce- cea cec cee ceg cei cek cen cer cet cga cgc cge cgg cgi cgn cgr cgt ci- cia cic cie cig cii cik cin cir cit cka ckc cki ckt cn- cna cnc cne cng cni cnn cnr cnt cra crc cre crg cri crk crn crr crt cta ctc cte ctg cti ctk ctn ctr ctt eaa eac eae eag eai eak ean ear eat ec- eca ecc ece ecg eci eck ecn ecr ect eea eec eee eeg eek een eer eet ega egc ege egg egi egn egr egt eia eic eie eig eii eik ein eir eit eka ekc eke ekg eki ekr ekt en- ena enc ene eng eni enk enn enr ent era erc ere erg eri erk ern err ert eta etc ete etg eti etk etn etr ett gaa gac gae gag gai gak gan gar gat gca gcc gce gcg gci gck gcn gcr gct ge- gea gec gee geg gei gek gen ger get gga ggc ggg ggi ggn ggr ggt gia gic gie gig gii gik gin gir git gka gkn gkt gna gnc gne gni gnn gnr gnt gra grc gre grg gri grk grn grr grt gta gtc gte gtg gti gtk gtn gtr gtt ia- iaa iac iae iag iai ian iar iat ica icc ice icg ici ick icn icr ict ie- iea iec iee ieg iei iek ien ier iet iga igc ige igg igi igk ign igr igt iia iic iie iii iin iir iit ika ikc ike iki ikk ikr ikt in- ina inc ine ing ini ink inn inr int ir- ira irc ire irg iri irk irn irr irt ita itc ite itg iti itk itn itt k-t ka- kaa kac kae kag kai kak kan kar kat kca kcc kce kcg kci kck kcn kcr kct ke- kea kec kee keg kei kek ken ker ket kga kgc kgi kia kic kie kig kii kik kin kir kit kkc kke kki kkk kkn kkr kkt kn- kna knc kne kng kni knk knn knr knt kra krc krg kri krk krn krr krt kta ktc kte ktg ktk ktn ktr ktt n-i naa nac nae nag nai nak nan nar nat nca ncc nce ncg nci nck ncn ncr nct ne- nea nec nee neg nei nek nen ner net nga ngc nge ngg ngi ngk ngn ngt nia nic nie nig nii nik nin nir nit nka nkc nke nki nkk nkn nkr nkt nna nnc nne nng nni nnk nnn nnt nra nrc nre nrg nri nrk nrn nrr nrt nta ntc nte ntg nti ntk ntn ntr ntt ra- raa rac rae rag rai rak ran rar rat rca rcc rce rcg rci rcn rcr rct re- rea rec ree reg rei rek ren rer ret rga rgc rge rgg rgi rgk rgn rgr rgt ria ric rie rig rii rik rin rir rit rkc rke rkg rkk rkt rna rnc rng rni rnn rnr rnt rra rrc rrg rri rrk rrn rrr rrt rta rtc rte rtg rti rtk rtn rtr rtt taa tac tae tag tai tak tan tar tat tca tcc tce tcg tci tck tcn tcr tct te- tea tec tee teg tei tek ten ter tet tga tgc tge tgg tgi tgk tgn tgr tgt tia tic tie tig tii tik tin tir tit tka tkc tke tkg tkk tkr tkt tna tnc tne tng tni tnk tnn tnr tnt tra trc tre trg tri trk trn trr trt tta ttc tte ttg tti ttk ttn ttr ttt