a-a a-b a-c aaa aab aac aak aap ab- aba abb abc abk abp ac- aca acb acc ack acp aka akb akc akk akp ap- apa apb apc apk app b-p baa bab bac bak bap bba bbb bbc bbk bbp bca bcb bcc bck bcp bka bkb bkc bkk bkp bpa bpb bpc bpp c-- caa cab cac cak cap cba cbb cbc cbk cbp cca ccb ccc cck ccp cka ckb ckc cpa cpb cpc cpk cpp ka- kaa kab kac kak kap kba kbb kbc kbk kbp kca kcb kcc kck kcp kkb kkc kkk kkp kpa kpc kpk kpp p-p paa pab pac pak pap pba pbb pbc pbk pbp pca pcb pcc pck pcp pka pkb pkc pkp ppa ppb ppc ppk ppp

a-ak aaaa aaab aaac aaap aaba aabb aabc aabp aaca aacb aacc aack aacp aaka aapa aapc abaa abab abac abak abap abb- abba abbb abca abcb abcc abcp abpa abpc abpp acaa acab acac acap acba acca accc accp acpa akaa akap akca akka apac apak apap apba apca apcb apcc appa appc baaa baak baba babb bac- baca bacc back bak- baka bapa bapc bapp bbbb bcaa bcap bcbc bcbp bcca bccc bcpp bpcp caaa caab caac caap caba cac- caca cacc cack caka capa capb capc capp cbac cbbc cbca cbcc cbcp cbka cbpc cbpp ccaa ccab ccac ccap ccba ccbc ccca cccb cccc cccp ccpa ccpp ckac ckbc ckck ckpc cpaa cpac cpap cpbc cpca cppa kaaa kaab kaak kaap kaba kabb kabc kacb kacc kacp kaka kakc kakk kap- kapa kapc kapp kbaa kbab kbac kbak kbap kbba kbbb kbbc kbbk kbca kbcb kbck kbkb kbkk kbpa kbpc kbpk kcaa kcab kcac kcap kcba kcbc kcbk kcca kccb kccc kcck kckc kckk kcpa kcpc kkaa kkac kkap kkba kkbb kkcb kkck kkkk kkpc kkpk kpac kpak kpba kpbb kpcc kpkk kppc kppk kppp paak paap paba paca pack paka papa papb papp pbac pbcc pbpa pbpk pcaa pcap pcba pcbc pcca pccc pcpb pcpp ppac ppap ppcc pppa pppp

-aaa- -cpca a-a-p a-pac aabaa aabba aacap aacbc aacbp aaccp aacpa aacpp abaab ababa abaca aback abaka abbac abccc acaca acacb acack acapp akaba apack apapa apcbc babak babka bacab bacca back- backa bakka c-a-c c-p-c ca-ca caaba cacak capab capac cappa ccccc cpack k-pac kaaba kabaa kabab kabak kabba kakap kakka kapaa kapak kapap kapca kappa packa pakaa papa- papak pappa

aaaaba abacab ackack akbaba akkaba baabaa bacaba bacpac bbbbbb caback cacapa cakcak kaback kabaka kakkak pppppp

aaa-cpa ack-ack bac-cab bbbbbbb cabback kacabac

back-cap bbbbbbbb pakapaka papapapa

abakabaka baabaabaa back-pack

pakka-pakka

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc