-ic a-a a-b a-c a-i aaa aab aac aag aai aak aap aar aas aax ab- aba abb abc abg abi abk abp abr abs abx ac- aca acb acc acg aci ack acp acr acs acx ag- aga agb agc agg agi agk agp agr ags agx ai- aia aib aic aig aii aik aip air ais aix aka akb akc akg aki akk akp akr aks ap- apa apb apc apg api apk app apr aps apx ar- ara arb arc arg ari ark arp arr ars arx as- asa asb asc asg asi ask asp asr ass asx ax- axa axi axk axp axr axs axx b-p baa bab bac bag bai bak bap bar bas bax bba bbb bbc bbg bbi bbk bbp bbr bbs bbx bca bcb bcc bcg bci bck bcp bcr bcs bcx bga bgb bgc bgg bgi bgk bgp bgr bgs bgx bi- bia bib bic big bii bik bip bir bis bix bka bkb bkc bkg bkk bkp bkr bks bkx bpa bpb bpc bpg bpi bpp bpr bps bpx bra brb brg bri brk brp brr brs brx bsa bsb bsc bsg bsi bsk bsp bsr bss bsx bxb bxi bxx c-- caa cab cac cag cai cak cap car cas cax cba cbb cbc cbg cbi cbk cbp cbr cbs cbx cca ccb ccc ccg cci cck ccp ccr ccs ccx cga cgb cgc cgg cgi cgp cgr cgs ci- cia cib cic cig cii cik cip cir cis cix cka ckb ckc cki cks ckx cpa cpb cpc cpg cpi cpk cpp cpr cps cpx cra crb crc crg cri crk crp crr crs crx csa csb csc csg csi csk csp csr css csx cxc cxi cxk cxp cxr cxs cxx g-p gaa gab gac gag gai gak gap gar gas gba gbc gbg gbi gbk gbp gbr gbs gbx gca gcb gcc gcg gci gck gcp gcr gcs gga ggb ggc ggg ggi ggp ggr ggs gia gib gic gig gii gik gip gir gis gka gkb gkp gks gpa gpb gpc gpg gpi gpk gpp gpr gps gpx gra grb grc grg gri grk grp grr grs grx gsa gsb gsc gsg gsi gsk gsp gsr gss gsx gxa gxp gxs ia- iaa iab iac iag iai iap iar ias iba ibb ibc ibg ibi ibk ibp ibr ibs ibx ica icb icc icg ici ick icp icr ics iga igb igc igg igi igk igp igr igs iia iib iic iii iip iir iis iix ika ikb ikc iki ikk ikr iks ikx ipa ipb ipc ipg ipi ipp ipr ips ipx ir- ira irb irc irg iri irk irp irr irs irx is- isa isb isc isg isi isk isp isr iss ixc ixi ka- kaa kab kac kag kai kak kap kar kas kax kba kbb kbc kbi kbk kbp kbr kbs kbx kca kcb kcc kcg kci kck kcp kcr kcs kcx kga kgb kgc kgi kgp kgs kgx kia kib kic kig kii kik kip kir kis kix kkb kkc kki kkk kkp kkr kks kpa kpc kpi kpk kpp kpr kps kra krc krg kri krk krp krr krs ksa ksb ksc ksg ksi ksk ksp ksr kss p-p paa pab pac pag pai pak pap par pas pax pba pbb pbc pbg pbi pbk pbp pbr pbs pbx pca pcb pcc pcg pci pck pcp pcr pcs pcx pga pgb pgc pgg pgi pgk pgp pgr pgs pia pib pic pig pii pik pip pir pis pix pka pkb pkc pkg pki pkp pkr pks ppa ppb ppc ppg ppi ppk ppp ppr pps ppx pra prb prc prg pri prk prp prr prs prx ps- psa psb psc psg psi psk psp psr pss psx pxc pxg pxk pxr pxs ra- raa rab rac rag rai rak rap rar ras rax rba rbb rbc rbg rbi rbk rbp rbr rbs rbx rca rcb rcc rcg rci rcp rcr rcs rcx rga rgb rgc rgg rgi rgk rgp rgr rgs rgx ria rib ric rig rii rik rip rir ris rix rkb rkc rkg rkk rkp rks rpa rpb rpc rpg rpi rpk rpp rpr rps rpx rra rrb rrc rrg rri rrk rrp rrr rrs rsa rsb rsc rsg rsi rsk rsp rsr rss rsx rxp rxr rxs saa sab sac sag sai sak sap sar sas sax sba sbb sbc sbg sbi sbk sbp sbr sbs sbx sca scb scc scg sci sck scp scr scs scx sga sgb sgc sgg sgi sgk sgp sgr sgs sgx sia sib sic sig sii sik sip sir sis six sk- ska skb skc skg ski skk skp skr sks skx spa spb spc spg spi spk spp spr sps spx sr- sra srb src srg sri srk srp srr srs srx ss- ssa ssb ssc ssg ssi ssk ssp ssr sss ssx sxc sxi sxs xaa xac xag xak xap xar xas xbc xbr xbx xcb xci xcp xcr xcx xgi xgp xia xic xii xis xix xkb xks xpa xpb xpc xpg xpp xps xrc xrx xsa xsb xsc xsi xsp xss xxi xxp xxx