-ana aaaa aaab aaan aaar aaas aaba aabb aana aang aara aars aasa aass abaa abab abag aban abar abas abb- abba abbb abbr abbs abra abrs abs- absa abss agag agan agar agas agba agga agna agns agra agsa agsg ana- anaa anab anag anan anar anas anba anbb ang- anga angs anna annb anns ansa arab arag aran arar aras arba arbs arga argb args arna arng arns arr- arra arrg arrr arrs ars- arsa asaa asab asag asan asar asas asba asra asrg asrs assa assn assr asss baaa baan baar baas baba babb babr babs baga bagg bagn bags bana bang bann banr bans bar- bara barb barg barn barr bars basa bass bbas bbbb bbbs bbga bbng bbrg bgan bggs bnas bnrr bnss brab brag bran bras brna brns brrr brrs brsb brsr bsaa bsas bsgs bsns bsra gaar gaas gaba gabb gabr gabs gaga gagg gags gana gang gann gans gara garb garg garn garr gars gasa gasb gasr gass gbag gban gbas gbbs gggg ggrn ggss gnaa gnar gnas gnrr grab gran gras grbr grrr grrs grss gsab naaa naab naag naan naar naas naba nabs naga nags nan- nana nanb nang nann nans nara narg narn narr nars nas- nasa nasb nasr nass nbaa nbar nbas ngab ngan ngas ngns ngsn nngn nnnn nnsa nnss nrab nras nrna nrsa nsaa nsar nsna nsnr nsra nssa nssb nssr nsss raab raag raan raas raba rabb rabs raga ragg rags rana rang rann rans rara rarb rars rasa rass rbbb rbbr rbbs rbss rgan rgba rnag rnas rnbr rngs rras rrna rrrr rsaa rsgb rsna rsnn rsnr rssa saab saag saan saar saas saba sabb sabr sabs saga sagg sags sana sang sann sanr sans sara sarg sarn sarr sars sasa sass sbaa sbar sbas sbbs sbsa sgaa sggg sggs sgss snab snag snar snas snba snns snra snrs sras srgb srna srnn ssaa ssab ssan ssas ssbn ssbr ssgs ssns ssra ssrg ssrs sssa sssb ssss