-ic a-a a-b a-c a-i aaa aab aac aai aak aap aar ab- aba abb abc abi abk abp abr ac- aca acb acc aci ack acp acr ai- aia aib aic aii aik aip air aka akb akc aki akk akp akr ap- apa apb apc api apk app apr ar- ara arb arc ari ark arp arr b-p baa bab bac bai bak bap bar bba bbb bbc bbi bbk bbp bbr bca bcb bcc bci bck bcp bcr bi- bia bib bic bii bik bip bir bka bkb bkc bkk bkp bkr bpa bpb bpc bpi bpp bpr bra brb bri brk brp brr c-- caa cab cac cai cak cap car cba cbb cbc cbi cbk cbp cbr cca ccb ccc cci cck ccp ccr ci- cia cib cic cii cik cip cir cka ckb ckc cki cpa cpb cpc cpi cpk cpp cpr cra crb crc cri crk crp crr ia- iaa iab iac iai iap iar iba ibb ibc ibi ibk ibp ibr ica icb icc ici ick icp icr iia iib iic iii iip iir ika ikb ikc iki ikk ikr ipa ipb ipc ipi ipp ipr ir- ira irb irc iri irk irp irr ka- kaa kab kac kai kak kap kar kba kbb kbc kbi kbk kbp kbr kca kcb kcc kci kck kcp kcr kia kib kic kii kik kip kir kkb kkc kki kkk kkp kkr kpa kpc kpi kpk kpp kpr kra krc kri krk krp krr p-p paa pab pac pai pak pap par pba pbb pbc pbi pbk pbp pbr pca pcb pcc pci pck pcp pcr pia pib pic pii pik pip pir pka pkb pkc pki pkp pkr ppa ppb ppc ppi ppk ppp ppr pra prb prc pri prk prp prr ra- raa rab rac rai rak rap rar rba rbb rbc rbi rbk rbp rbr rca rcb rcc rci rcp rcr ria rib ric rii rik rip rir rkb rkc rkk rkp rpa rpb rpc rpi rpk rpp rpr rra rrb rrc rri rrk rrp rrr

a-ak a-ii aaaa aaab aaac aaai aaap aaar aaba aabb aabc aabi aabp aaca aacb aacc aaci aack aacp aacr aaib aaic aaii aaka aapa aapc aapi aara aarc aari aarp abaa abab abac abai abak abap abar abb- abba abbb abbi abbr abca abcb abcc abci abcp abcr abia abib abic abir abpa abpc abpi abpp abpr abra abrc abri acaa acab acac acai acap acar acba acca accc acci accp aci- acia acic acip acir acpa acpi acpr acr- acra acrc acri acrr aiai aiba aica aicc aicp aicr aiia aiib aiic aiir aika aiki aipa aipi aira airi airp akaa akai akap akar akca akia akik akir akka akki akr- akra apac apai apak apap apar apba apbr apca apcb apcc apcr api- apia apic apip appa appc appr apra aprc apri arab arac arai arak arap arar arba arbi arc- arca arci aria arib arii arik arip arka arki arpa arpi arr- arra arrc arri arrk arrr ba-i baaa baak baar baba babb babi babr bac- baca bacc baci back baia baib baic baik bair bak- baka baki bakr bapa bapc bapi bapp bar- bara barb barc bari bark barr bbbb bbci bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcci bcia bcpp bcra biak biap biar biba bibb bibi bica bicc bici bick bipa bipp bira birb biri birk birr bkpr bpai bpcp bprc brab brac brai brak brca brcb bria bric brik brka brkb brrr caaa caab caac caap caba cabi cac- caca cacc caci cack cacr caia caib caic caik caip cair caka capa capb capc capi capp cara carb carc cari cark carp carr cbac cbar cbbc cbca cbcc cbcp cbcr cbia cbir cbka cbkr cbpc cbpp ccaa ccab ccac ccai ccap ccar ccba ccbc ccca cccb cccc ccci cccp ccic ccii ccip ccir ccpa ccpp ccpr ccra ccrc ccri ccrp ciaa ciak ciar ciba cibc cibi cica cicc cici cicr ciia ciii cika cikr cipa cipp cira cirb circ ciri cirk cirr ckac ckbc ckbi ckck ckpc ckpr ckrc cpaa cpac cpap cpbc cpca cpia cpic cppa cpri crab crac crai crap crar crbc crca crcc crcr cria crib cric crik crip crkc crkp crpc iaaa iaac iaai iaap iaba iaca iacc iacp iacr iaia iapa iapp iara iarc ibac ibar ibca ibia ibra ibrc ibri icaa icab icac icai icap icar icbc icbp icca iccb iccc icci iccp iccr icpa icpc icra icrc icrr iiac iica iiii iipa iira iirc ikar ikki ikra ikri ipac ipak ipba ipbk ipca ipcc ippa ippc ippr ipri irac irai irak irap irar irbp irca ircc iri- iria iric irip irka irki irpa irpc irra irrc irri k-ci kaaa kaab kaai kaak kaap kaar kaba kabb kabc kabi kabr kacb kacc kaci kacp kaia kaib kaic kaii kaik kaip kair kaka kakc kaki kakk kap- kapa kapc kapi kapp kara karb kari kark karp karr kbaa kbab kbac kbai kbak kbap kbar kbba kbbb kbbc kbbi kbbk kbbr kbca kbcb kbci kbck kbcr kbia kbib kbic kbik kbkb kbkk kbkr kbpa kbpc kbpi kbpk kbpr kbra kbrb kbrc kbri kbrk kcaa kcab kcac kcai kcap kcar kcba kcbc kcbi kcbk kcbr kcca kccb kccc kcci kcck kccr kcic kcii kcir kckc kckk kckr kcpa kcpc kcpi kcpr kcrc kcri kcrp kcrr kiab kiac kiai kiap kiar kiba kibb kibc kibi kibr kica kicb kicc kick kicp kicr kiia kiic kiii kiik kiip kika kikc kiki kikk kikr kip- kipa kipi kipp kipr kira kirb kirc kiri kirk kirp kirr kkaa kkac kkai kkap kkar kkba kkbb kkbi kkbr kkcb kkci kkck kkcr kkia kkic kkik kkkk kkpc kkpk kkrb kkrc kkrk kkrr kpac kpak kpar kpba kpbb kpbi kpbr kpcc kpcr kpia kpir kpkk kpkr kppc kppk kppp kppr kprb kprc kpri kprk kprp kprr krab krac krai krak krap krar krba krbb krbi krbk krbr krca krcb krcc krci kria krib krik krka krkc krki krkk krkr krpa