-ana aaaa aaab aaaf aaan aaar aaas aaba aabb aafa aafb aaff aana aara aars aasa aasf aass abaa abab abaf aban abar abas abb- abba abbb abbr abbs abff abra abrs abs- absa absf abss afaa afan afar afbs affa affs afr- afra afrs afsa afsb ana- anaa anab anan anar anas anba anbb anfa anna annb anns ansa ansf arab araf aran arar aras arba arbs arfa arfb arff arfs arna arns arr- arra arrr arrs ars- arsa asaa asab asaf asan asar asas asba asfa asra asrs assa assn assr asss baaa baaf baan baar baas baba babb babr babs baff bana bann banr bans bar- bara barb barf barn barr bars basa basf bass bbas bbbb bbbs bbfn bfas bffs bfsr bnas bnrr bnss brab braf bran bras brna brns brrr brrs brsb brsr bsaa bsas bsfa bsff bsfs bsns bsra faaa faan faas faba fabs fafa faff fana fans fara farb farr fars fasa fasn fass fbar fbrs ffar ffff ffrr ffsa ffss fnar fnrs frab fran fras frns frsb fsas fsra fssa fssf naaa naab naan naar naas naba nabf nabs nafa naff nafs nan- nana nanb nann nans nara narf narn narr nars nas- nasa nasb nasf nasr nass nbaa nbaf nbar nbas nbfa nfaa nfas nfff nfra nfrs nfsr nnnn nnsa nnss nrab nras nrna nrsa nsaa nsar nsfs nsna nsnr nsra nssa nssb nssf nssr nsss raab raaf raan raas raba rabb rabs rafa raff rana rann rans rara rarb rarf rars rasa rass rbaf rbbb rbbr rbbs rbss rnaf rnas rnbr rras rrna rrrr rsaa rsaf rsna rsnn rsnr rssa saab saaf saan saar saas saba sabb sabr sabs safa safb saff safr sana sann sanr sans sara sarf sarn sarr sars sasa sasf sass sbaa sbar sbas sbbs sbsa sfar sfas sfba sfnb sfra sfss snab snar snas snba snns snra snrs sraf sras srna srnn ssaa ssab ssan ssas ssbn ssbr ssns ssra ssrs sssa sssb sssf ssss