bbbb bbbs bbdd bbeb bbrc bcbc bcbs bccc bccs bcde bcds bcec bcer bces bcrs bcsc bcss bd-r bdbc bddc bdes bdsd bebb bebe beck becs bede beds beeb beed beek beer bees beke beks berc berd bere berk berr bers bes- bese besk bess brcb brce brds breb brec bred bree brek brer bres brkb brrr brrs brsb brsr bsbd bscs bseb bsec bsed bsee bser bses bsrd bssc bssd bsse c-cd cbbc cbbs cbcc cbce cbcr cbcs cbdb cbdc cbds cbec cbee cber cbkr cbrd cbre cbsc cbse ccbc cccb cccc cccs ccdc ccdr ccds cced ccee ccrc ccre ccrs ccsd ccss cd-e cd-r cdcs cddb cddr cdec cder cdes cdre cdrs cdss cebs cec- cece cecs cedd cede ceeb ceec cees ceke cer- cerc cerd cere cers cesc cese cesr cess ckbc ckbe ckck ckcs cker ckrc ckrd cksb crbc crcc crce crcr crdc cre- creb crec cred cree cres crkc crss cscb cscc cscd csce cscr cscs csdb csdr csec csee cser csks csrc csrd csrs cssd csse cssr dbcc dbcs dbrs dbss dcbc dccb dccc dccs dcdb dcds dcrk dcsc dcss dddd ddes ddrc ddre ddss debe debs dec- decc decd dece deck decs dedd dede deeb deed deek deer dees dek- deke deks der- derb derc dere derk derr ders des- desc dese desk dess dkdc drbc dred dree drek dres drrs dsbc dscc dscr dscs dsdr dsrc dsrr dssc ebbc ebbr ebbs ebcc ebed eber ebes ecbc ecbe eccb eccc ecce ecdc eced eces ecks ecrc ecrr ecsc ecse ecss eddc edde edds ede- eder edes edss eecs eede eeee eees eeke eeks eerc eers eese eesk ekeb eked ekek eker ekes erbb erbe ercc erce erde erds ereb erec ered erer eres erke erks errc erre errs erse esbs escb esce escr escs esds esee esek eser eses eske esks esrd esse kbbb kbbc kbbd kbbe kbbk kbbr kbbs kbcb kbce kbck kbcr kbcs kbdb kbde kbdr kbds kbeb kbec kbed kbee kbek kber kbes kbkb kbkk kbkr kbrb kbrc kbrd kbre kbrk kbsb kbsk kbsr kbss kcbc kcbd kcbk kcbr kcbs kccb kccc kccd kcck kccr kcdc kcdd kcdr kcds kceb kcec kced kcee kckc kckk kckr kcrc kcrr kcrs kcsb kcsc kcsd kcse kcsr kcss kdbb kdbr kdbs kdcc kdcd kdce kdcr kddb kddc kddd kddk kddr kdeb kdec kdkb kdkd kdkk kdkr kdrb kdrs kdsc kdsd kdsk kdsr kdss kebb kebc kebe kebr keck kecr kedb kedc kedd kede kedr keds keed keek keer kees kekb kekc keke keks ker- kerb kerc kere kerk kerr kers kesb kesc kesd kesk kesr kess kkbb kkbd kkbe kkbr kkbs kkcb kkcd kkck kkcr kkcs kkdc kkdd kked kkkk kkrb kkrc kkre kkrk kkrr kkrs kksd kkse kksr kkss krbb krbd krbe krbk krbr krcb krcc krcd krce krcs krdc krdd krde krdr krds kreb krec kred kree krek kres krkc krkd krke krkk krkr krks krrb krrc krre krrk krrr krrs krsc krsd krse krsk krsr krss ksbc ksbr ksbs kscb ksce ksck kscr kscs ksdc ksdk ksdr ksds ksec ksed ksee ksek kser kskb kskd kske kskk kskr ksks ksrb ksrr ksrs ksse kssr ksss rbbb rbbr rbbs rbds rbsd rbss rcbc rccb rccc rccs rcdc rcde rcds rcrd rcsc rcsd rcss rder rebb rebe rebk rebs recc recd rece reck recr recs redc redd rede redr reds reeb reed reek rees reke reks rerd rere rers rese ress rkss rred rrrr rscc rscs rsdd rsds rsee rsre sbbs sbcc sbcs sbds sber sbrk sbsd sbse sccc scce sccs scdc scds scec scee scer sck- scr- scrc scre scrs scsc scsd scsr sdcc sddc sdds sder sdes sdrc sdrs sdsc sdss se-c se-d se-e se-k se-s sebe sebs sec- secc secd sece seck secr secs sede seds seeb seec seed seek seer sees seke sekk serb serc serd sere serk serr sers sesc sese sess sked skee sker skes sksd skss srbc srcc srde sreb srec sres srsd ssbr sscc ssce sscs ssdc ssdd ssec ssee sses ssrc ssrs sssb sssc ssss