-ana aaaa aaab aaan aaar aaas aaba aabb aana aara aars aasa aass abaa abab aban abar abas abb- abba abbb abbr abbs abra abrs abs- absa abss abza ana- anaa anab anan anar anas anaz anba anbb anna annb anns ansa anza arab aran arar aras arba arbs arna arns arr- arra arrr arrs ars- arsa arza asaa asab asan asar asas asba asra asrs assa assn assr asss aza- azab azan azar azas azaz azna azra azza baaa baan baar baas baaz baba babb babr babs bana bann banr bans banz bar- bara barb barn barr bars barz basa bass baza bbas bbbb bbbs bnas bnrr bnss brab bran bras braz brna brns brrr brrs brsb brsr brza bsaa bsas bsns bsra bzzz naaa naab naan naar naas naba nabs nan- nana nanb nann nans nara narn narr nars narz nas- nasa nasb nasr nass naza nazz nbaa nbar nbas nnnn nnsa nnss nrab nras nrna nrsa nsaa nsar nsna nsnr nsra nssa nssb nssr nsss nzar nzra nzrb raab raan raas raaz raba rabb rabs rana rann rans ranz rara rarb rars rarz rasa rass raza razr razz rbbb rbbr rbbs rbss rnas rnbr rras rrna rrrr rsaa rsna rsnn rsnr rssa rzab saab saan saar saas saaz saba sabb sabr sabs sabz sana sann sanr sans sanz sara sarn sarr sars sarz sasa sass saza sbaa sbar sbas sbbs sbsa snab snar snas snba snns snra snrs sras srna srnn ssaa ssab ssan ssas ssbn ssbr ssns ssra ssrs sssa sssb ssss szar szss zaan zaar zaba zabr zana zann zans zara zarb zarr zaza zbar zsss zzzs zzzz