-ic a-a a-b a-c a-i aaa aab aac aai aao aap aar ab- aba abb abc abi abo abp abr ac- aca acb acc aci aco acp acr ai- aia aib aic aii aio aip air aoa aob aoc aoi aoo aop aor ap- apa apb apc api apo app apr ar- ara arb arc ari aro arp arr b-p baa bab bac bai bao bap bar bba bbb bbc bbi bbo bbp bbr bca bcb bcc bci bco bcp bcr bi- bia bib bic bii bio bip bir boa bob boc boi boo bop bor bpa bpb bpc bpi bpo bpp bpr bra brb bri bro brp brr c-- caa cab cac cai cao cap car cba cbb cbc cbi cbo cbp cbr cca ccb ccc cci cco ccp ccr ci- cia cib cic cii cio cip cir co- coa cob coc coi coo cop cor cpa cpb cpc cpi cpo cpp cpr cra crb crc cri cro crp crr ia- iaa iab iac iai iao iap iar iba ibb ibc ibi ibo ibp ibr ica icb icc ici ico icp icr iia iib iic iii iio iip iir io- ioa iob ioc ioi ioo iop ior ipa ipb ipc ipi ipo ipp ipr ir- ira irb irc iri iro irp irr o-i oaa oab oac oai oao oap oar ob- oba obb obc obi obo obp obr oc- oca ocb occ oci oco ocp ocr oia oib oic oii oio oip oir oo- ooa oob ooc ooi ooo oop oor op- opa opb opc opi opo opp opr or- ora orb orc ori oro orp orr p-p paa pab pac pai pao pap par pba pbb pbc pbi pbo pbp pbr pca pcb pcc pci pco pcp pcr pia pib pic pii pio pip pir poa pob poc poi poo pop por ppa ppb ppc ppi ppo ppp ppr pra prb prc pri pro prp prr ra- raa rab rac rai rao rap rar rba rbb rbc rbi rbo rbp rbr rca rcb rcc rci rco rcp rcr ria rib ric rii rio rip rir roa rob roc roi roo rop ror rpa rpb rpc rpi rpo rpp rpr rra rrb rrc rri rrp rrr

a-ii aaaa aaab aaac aaai aaap aaar aaba aabb aabc aabi aabp aaca aacb aacc aaci aaco aacp aacr aaib aaic aaii aaoo aapa aapc aapi aapo aara aarc aari aaro aarp abaa abab abac abai abap abar abb- abba abbb abbi abbo abbr abca abcb abcc abci abcp abcr abia abib abic abir aboa abob aboo abor abpa abpc abpi abpp abpr abra abrc abri abro acaa acab acac acai acap acar acba acca accc acci acco accp aci- acia acic acip acir acoa acop acor acpa acpi acpr acr- acra acrc acri acro acrr aiai aiba aibo aica aicc aicp aicr aiia aiib aiic aiir aioc aioi aipa aipi aira airi airo airp aoba aoca aopo aora aorb apac apai apao apap apar apba apbr apca apcb apcc apco apcr api- apia apic apio apip apo- apoc apoo apop apor appa appc appr apra aprc apri apro arab arac arai arap arar arba arbi arc- arca arci arco aria arib arii ario arip aroa arob aroi aroo aror arpa arpi arr- arra arrc arri arro arrr ba-i baaa baar baba babb babi babo babr bac- baca bacc baci baco baia baib baic baio bair bapa bapc bapi bapp bar- bara barb barc bari baro barr bbbb bbci bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcci bcia bcor bcpp bcra biao biap biar biba bibb bibi bibo bica bicc bici bico bio- bioc bioi bipa bipp bira birb biri biro birr boab boac boai boar boba bobb bobi bobo boca boco boi- boii boob booc boop boor bopa bopp bor- bora bori boro borr bpai bpcp bprc brab brac brai brao brca brcb bria bric brio broa brob broc broo bror brrr c-bo caaa caab caac caap caba cabi cabo cac- caca cacc caci caco cacr caia caib caic caio caip cair caoi caor capa capb capc capi capo capp cara carb carc cari caro carp carr cbac cbar cbbc cbca cbcc cbcp cbcr cbia cbir cbpc cbpp ccaa ccab ccac ccai ccap ccar ccba ccbc ccca cccb cccc ccci cccp ccic ccii ccip ccir ccob ccoc ccpa ccpp ccpr ccra ccrc ccri ccrp ciaa ciao ciar ciba cibc cibi cibo cica cicc cici cico cicr ciia ciii ciob cior cipa cipo cipp cira cirb circ ciri ciro cirr coai coba cobb cobi cobo coca coco cocp coia coip coir coob coop copa copi copo copp copr cor- cora corb corc cori coro corp corr cpaa cpac cpap cpbc cpca cpia cpic cpio cppa cpri crab crac crai crap crar crbc crca crcc crcr cria crib cric crip crob croc croo crop cror crpc iaaa iaac iaai iaap iaba iaca iacc iacp iacr iaia iapa iapp iara iarc ibac ibar ibca ibia ibra ibrc ibri ibro icaa icab icac icai icao icap icar icbc icbp icca iccb iccc icci icco iccp iccr icoc icor icpa icpc icpo icra icrc icrr iiac iica iiii iiio iioi iioo iiop iipa iira iirc ioba iobi ioci iocp ioii ioio iooi iooo iora iori ipac ipba ipca ipcc ipop ippa ippc ippo ippr ipri irac irai irao irap irar irbp irca ircc iri- iria iric irio irip irob iroc irop irpa irpc irra irrc irri oaic oapi oara obai obba obbo obia oboi obor obra obri obro ocab ocac ocap ocbc occa occc occi ocpa ocpp ocra ocro ocrr oiba oici oiii oipc oira ooaa ooba oobi oocr ooia oooo oora opap opar opca opia opic opii opio opo- opor oppa oppi oppo opra orab orac orai orao orar orba orbb orbi orbo orca orci orco ori- oria oric orio oro- oror orpc orpi orra orri orro paap paar paba paca paci paco paia paib paio paip pair paoc papa papb papi papp papr par- para parc pari paro parp parr pbac pbar pbcc