-ana a-ak aaaa aaab aaan aaar aaas aaba aabb aaka aana aara aars aasa aass abaa abab abak aban abar abas abb- abba abbb abbr abbs abra abrs abs- absa abss akaa akan akar akas akka akna akr- akra aksa ana- anaa anab anak anan anar anas anba anbb ank- anka anna annb anns ansa arab arak aran arar aras arba arbs arka arks arna arnk arns arr- arra arrk arrr arrs ars- arsa arsk asaa asab asak asan asar asas asba aska askr asks asra asrs assa assk assn assr asss baaa baak baan baar baas baba babb babr babs bak- baka bakr baks bana bank bann banr bans bar- bara barb bark barn barr bars basa bask bass bbas bbbb bbbs bnas bnrr bnss brab brak bran bras brka brkb brna brns brrr brrs brsb brsr bsaa bsas bsns bsra kaaa kaab kaak kaan kaar kaas kaba kabb kabr kaka kakk kakn kaks kana kanb kann kans kara karb kark karn karr kars kas- kasa kasb kask kasn kasr kass kbaa kbab kbak kbar kbas kbba kbbb kbbk kbbr kbbs kbkb kbkk kbkr kbna kbnn kbnr kbra kbrb kbrk kbrn kbsa kbsb kbsk kbsn kbsr kbss kkaa kkan kkar kkba kkbb kkbn kkbr kkbs kkkk kknb kknn kkns kkrb kkrk kkrn kkrr kkrs kksa kksn kksr kkss knaa knab knan knar knas knba knbb knbn knbr knkk knnb knnk knnr knns knrb knrk knrs knsa knsb knsk knsn knsr knss krab krak kran krar kras krba krbb krbk krbr krka krkk krkn krkr krks krna krnb krnk krnn krrb krrk krrn krrr krrs krsa krsk krsn krsr krss ksab ksak ksan ksar ksas ksba ksbn ksbr ksbs kska kskb kskk kskn kskr ksks ksna ksnb ksnk ksnn ksnr ksns ksra ksrb ksrn ksrr ksrs kssa kssn kssr ksss naaa naab naan naar naas naba nabk nabs naka naks nan- nana nanb nann nans nara nark narn narr nars nas- nasa nasb nask nasr nass nbaa nbak nbar nbas nnnn nnsa nnss nrab nras nrna nrsa nsaa nsar nskk nsna nsnr nsra nssa nssb nssr nsss raab raak raan raas raba rabb rabk rabs raka rakk rana rank rann rans rara rarb rark rars rasa rask rass rbbb rbbr rbbs rbss rkss rnas rnbr rras rrna rrrr rsaa rsna rsnn rsnr rssa saab saak saan saar saas saba sabb sabr sabs saka sakb sakk saks sana sank sann sanr sans sara sark sarn sarr sars sasa sask sass sbaa sbar sbas sbbs sbrk sbsa skab skan skar skn- skra skss snab snak snar snas snba snns snra snrk snrs sras srna srnn ssaa ssab ssan ssas ssbn ssbr ssns ssra ssrs sssa sssb ssss