-er a-a a-b a-i a-z aaa aab aae aag aah aai aar aaz ab- aba abb abe abg abh abi abr abz aea aeb aee aeg aeh aei aer aez ag- aga agb age agg agh agi agr agz aha ahb ahe ahg ahh ahi ahr ahz ai- aia aib aie aig aih aii air aiz ar- ara arb are arg arh ari arr arz az- aza azb aze azg azi azz baa bab bae bag bah bai bar baz bba bbb bbe bbg bbh bbi bbr be- bea beb bee beg beh bei ber bez bga bgb bge bgg bgh bgi bgr bgz bha bhb bhe bhg bhh bhi bhr bi- bia bib bie big bih bii bir biz bra brb bre brg brh bri brr brz bza bze bzh bzr bzz eaa eab eae eag eah eai ear eaz eba ebb ebe ebg ebh ebi ebr eea eeb eee eeg eer ega egb ege egg egh egi egr eha ehb ehe ehg ehh ehi ehr eia eib eie eig eii eir era erb ere erg erh eri err erz eze ezh ezr ezz gaa gab gae gag gah gai gar gaz gba gbe gbg gbh gbi gbr gbz ge- gea geb gee geg geh gei ger gez gga ggb ggg ggh ggi ggr ggz gha ghb ghe ghg ghh ghi ghr ghz gia gib gie gig gih gii gir giz gra grb gre grg grh gri grr gza gzr h-i haa hab hae hag hah hai har haz hba hbb hbe hbg hbh hbi hbr hbz he- hea heb hee heg heh hei her hez hga hgb hge hgg hgh hgi hgr hha hhb hhe hhg hhh hhi hhr hhz hia hib hie hig hih hii hir hr- hra hrb hre hrg hrh hri hrr hrz hze ia- iaa iab iae iag iah iai iar iaz iba ibb ibe ibg ibh ibi ibr ibz ie- iea iee ieg iei ier iga igb ige igg igh igi igr iha ihb ihe ihg ihh ihi ihr iia iib iie iih iii iir ir- ira irb ire irg iri irr iza ize izh izi izz ra- raa rab rae rag rah rai rar raz rba rbb rbe rbg rbh rbi rbr re- rea reb ree reg reh rei rer rez rga rgb rge rgg rgh rgi rgr rh- rha rhb rhe rhg rhh rhi rhr ria rib rie rig rih rii rir riz rra rrb rrg rrh rri rrr rza rzb rze z-g zaa zab zag zah zai zar zaz zbb zbr zea zeb zee zeh zer zez zgb zgg zgi zha zhe zhi zhr zia zib zie zig zir ziz zrh zzr zzz