-er -ic a-a a-b a-c a-i aaa aab aac aae aag aah aai aao aap aar ab- aba abb abc abe abg abh abi abo abp abr ac- aca acb acc ace acg ach aci aco acp acr aea aeb aec aee aeg aeh aei aeo aep aer ag- aga agb agc age agg agh agi ago agp agr aha ahb ahc ahe ahg ahh ahi aho ahp ahr ai- aia aib aic aie aig aih aii aio aip air aoa aob aoc aoe aog aoh aoi aoo aop aor ap- apa apb apc ape apg aph api apo app apr ar- ara arb arc are arg arh ari aro arp arr b-p baa bab bac bae bag bah bai bao bap bar bba bbb bbc bbe bbg bbh bbi bbo bbp bbr bca bcb bcc bce bcg bch bci bco bcp bcr be- bea beb bec bee beg beh bei beo bep ber bga bgb bgc bge bgg bgh bgi bgo bgp bgr bha bhb bhc bhe bhg bhh bhi bho bhp bhr bi- bia bib bic bie big bih bii bio bip bir boa bob boc boe bog boh boi boo bop bor bpa bpb bpc bpe bpg bph bpi bpo bpp bpr bra brb bre brg brh bri bro brp brr c-- caa cab cac cae cag cah cai cao cap car cba cbb cbc cbe cbg cbh cbi cbo cbp cbr cca ccb ccc cce ccg cch cci cco ccp ccr ce- cea ceb cec cee ceg ceh cei ceo cep cer cga cgb cgc cge cgg cgh cgi cgo cgp cgr ch- cha chb chc che chg chh chi cho chp chr ci- cia cib cic cie cig cih cii cio cip cir co- coa cob coc coe cog coh coi coo cop cor cpa cpb cpc cpe cpg cph cpi cpo cpp cpr cra crb crc cre crg crh cri cro crp crr eaa eab eac eae eag eah eai eao eap ear eba ebb ebc ebe ebg ebh ebi ebo ebp ebr ec- eca ecb ecc ece ecg ech eci eco ecr eea eeb eec eee eeg eeo eep eer ega egb egc ege egg egh egi ego egp egr eha ehb ehc ehe ehg ehh ehi eho ehp ehr eia eib eic eie eig eii eio eip eir eo- eoa eob eoc eoe eog eoh eoi eoo eop eor ep- epa epb epc epe epg eph epi epo epp epr era erb erc ere erg erh eri ero erp err g-p gaa gab gac gae gag gah gai gao gap gar gba gbc gbe gbg gbh gbi gbo gbp gbr gca gcb gcc gce gcg gch gci gco gcp gcr ge- gea geb gec gee geg geh gei geo gep ger gga ggb ggc ggg ggh ggi ggo ggp ggr gha ghb ghc ghe ghg ghh ghi gho ghp ghr gia gib gic gie gig gih gii gio gip gir goa gob goc goe gog goh goi goo gop gor gpa gpb gpc gpe gpg gph gpi gpo gpp gpr gra grb grc gre grg grh gri gro grp grr h-i haa hab hac hae hag hah hai hao hap har hba hbb hbc hbe hbg hbh hbi hbo hbp hbr hca hcb hcc hce hcg hch hci hco hcp hcr he- hea heb hec hee heg heh hei heo hep her hga hgb hgc hge hgg hgh hgi hgo hgp hgr hha hhb hhc hhe hhg hhh hhi hho hhp hhr hia hib hic hie hig hih hii hio hip hir hoa hob hoc hoe hog hoh hoi hoo hop hor hpa hpb hpc hpe hpg hph hpi hpo hpp hpr hr- hra hrb hrc hre hrg hrh hri hro hrp hrr ia- iaa iab iac iae iag iah iai iao iap iar iba ibb ibc ibe ibg ibh ibi ibo ibp ibr ica icb icc ice icg ich ici ico icp icr ie- iea iec iee ieg iei iep ier iga igb igc ige igg igh igi igo igp igr iha ihb ihc ihe ihg ihh ihi iho ihp ihr iia iib iic iie iih iii iio iip iir io- ioa iob ioc ioe iog ioh ioi ioo iop ior ipa ipb ipc ipe ipg ipi ipo ipp ipr ir- ira irb irc ire irg iri iro irp irr o-i oaa oab oac oae oag oah oai oao oap oar ob- oba obb obc obe obg obh obi obo obp obr oc- oca ocb occ ocg och oci oco ocp ocr oea oeb oec oee oeg oeh oei oeo oep oer oga ogc oge ogg ogh ogi ogo ogp oha ohc ohe ohg ohh ohi oho ohp ohr oia oib oic oie oii oio oip oir oo- ooa oob ooc oog ooh ooi ooo oop oor op- opa opb opc ope opg oph opi opo opp opr or- ora orb orc ore org orh ori oro orp orr p-p paa pab pac pae pag pah pai pao pap par pba pbb pbc pbe pbg pbi pbo pbp pbr pca pcb pcc pce pcg pch pci pco pcp pcr pea peb pec pee peg peh pei peo pep per pga pgb pgc pge pgg pgh pgi pgo pgp pgr pha phb phc phe phg phi pho php phr pia pib pic pie pig pih pii pio pip pir poa pob poc poe pog poh poi poo pop por ppa ppb ppc ppe ppg pph ppi ppo ppp ppr pra prb prc pre prg prh pri pro prp prr ra- raa rab rac rae rag rah rai rao rap rar rba rbb rbc rbe rbg rbh rbi rbo rbp rbr rca rcb rcc rce rcg rch rci rco rcp rcr re- rea reb rec ree reg reh rei reo rep rer rga rgb rgc rge rgg rgh rgi rgo rgp rgr rh- rha rhb rhc rhe rhg rhh rhi rho rhp rhr ria rib ric rie rig rih rii rio rip rir roa rob roc roe rog roh roi roo rop ror