-er -ic a-a a-b a-c a-i aaa aab aac aae aag aah aai aak aar ab- aba abb abc abe abg abh abi abk abr ac- aca acb acc ace acg ach aci ack acr aea aeb aec aee aeg aeh aei aek aer ag- aga agb agc age agg agh agi agk agr aha ahb ahc ahe ahg ahh ahi ahk ahr ai- aia aib aic aie aig aih aii aik air aka akb akc ake akg akh aki akk akr ar- ara arb arc are arg arh ari ark arr baa bab bac bae bag bah bai bak bar bba bbb bbc bbe bbg bbh bbi bbk bbr bca bcb bcc bce bcg bch bci bck bcr be- bea beb bec bee beg beh bei bek ber bga bgb bgc bge bgg bgh bgi bgk bgr bha bhb bhc bhe bhg bhh bhi bhk bhr bi- bia bib bic bie big bih bii bik bir bka bkb bkc bke bkg bkk bkr bra brb bre brg brh bri brk brr c-- caa cab cac cae cag cah cai cak car cba cbb cbc cbe cbg cbh cbi cbk cbr cca ccb ccc cce ccg cch cci cck ccr ce- cea ceb cec cee ceg ceh cei cek cer cga cgb cgc cge cgg cgh cgi cgr ch- cha chb chc che chg chh chi chk chr ci- cia cib cic cie cig cih cii cik cir cka ckb ckc ckh cki cra crb crc cre crg crh cri crk crr eaa eab eac eae eag eah eai eak ear eba ebb ebc ebe ebg ebh ebi ebk ebr ec- eca ecb ecc ece ecg ech eci eck ecr eea eeb eec eee eeg eek eer ega egb egc ege egg egh egi egr eha ehb ehc ehe ehg ehh ehi ehr eia eib eic eie eig eii eik eir eka ekb ekc eke ekg ekh eki ekr era erb erc ere erg erh eri erk err gaa gab gac gae gag gah gai gak gar gba gbc gbe gbg gbh gbi gbk gbr gca gcb gcc gce gcg gch gci gck gcr ge- gea geb gec gee geg geh gei gek ger gga ggb ggc ggg ggh ggi ggr gha ghb ghc ghe ghg ghh ghi ghr gia gib gic gie gig gih gii gik gir gka gkb gkh gra grb grc gre grg grh gri grk grr h-i haa hab hac hae hag hah hai hak har hba hbb hbc hbe hbg hbh hbi hbk hbr hca hcb hcc hce hcg hch hci hck hcr he- hea heb hec hee heg heh hei hek her hga hgb hgc hge hgg hgh hgi hgk hgr hha hhb hhc hhe hhg hhh hhi hhk hhr hia hib hic hie hig hih hii hik hir hka hkb hkg hkh hki hkk hkr hr- hra hrb hrc hre hrg hrh hri hrk hrr ia- iaa iab iac iae iag iah iai iar iba ibb ibc ibe ibg ibh ibi ibk ibr ica icb icc ice icg ich ici ick icr ie- iea iec iee ieg iei iek ier iga igb igc ige igg igh igi igk igr iha ihb ihc ihe ihg ihh ihi ihk ihr iia iib iic iie iih iii iir ika ikb ikc ike iki ikk ikr ir- ira irb irc ire irg iri irk irr ka- kaa kab kac kae kag kah kai kak kar kba kbb kbc kbe kbh kbi kbk kbr kca kcb kcc kce kcg kch kci kck kcr ke- kea keb kec kee keg keh kei kek ker kga kgb kgc kgh kgi kha khe khh khi khk khr kia kib kic kie kig kih kii kik kir kkb kkc kke kkh kki kkk kkr kra krc krg kri krk krr ra- raa rab rac rae rag rah rai rak rar rba rbb rbc rbe rbg rbh rbi rbk rbr rca rcb rcc rce rcg rch rci rcr re- rea reb rec ree reg reh rei rek rer rga rgb rgc rge rgg rgh rgi rgk rgr rh- rha rhb rhc rhe rhg rhh rhi rhr ria rib ric rie rig rih rii rik rir rkb rkc rke rkg rkk rra rrb rrc rrg rrh rri rrk rrr