a-ha a-ii aaaa aaab aaac aaaf aaah aaai aaar aaba aabb aabc aabh aabi aaca aacb aacc aacf aach aaci aacr aafa aafb aafc aaff aafi aaha aaib aaic aaii aara aarc aari abaa abab abac abaf abai abar abb- abba abbb abbi abbr abca abcb abcc abcf abch abci abcr abff abha abhi abhr abia abib abic abir abra abrc abri acaa acab acac acai acar acba acca accc accf acch acci acfc acfi acha achh achi achr aci- acia acic acif acir acr- acra acrc acri acrr afaa afar afca afcb afcc afch afci affa affc affi afia afib afif afir afr- afra afrc afri ahab ahac ahah ahai ahar ahfa ahha ahir ahra ahrc ahrr aiai aiba aica aicc aicf aich aicr aiff aiha aiia aiib aiic aiir aira airh airi arab arac araf arah arai arar arba arbh arbi arc- arca arch arci arfa arfb arfc arff arh- aria arib arif arii arr- arra arrc arrh arri arrr ba-i baaa baaf baah baar baba babb babi babr bac- baca bacc bach baci bafc baff baha bahi bahr baia baib baic bair bar- bara barb barc barf barh bari barr bbbb bbch bbci bbfc bbrc bcaa bcar bcbc bcca bccc bcci bcfc bcia bcra bfca bhai bhar bhca bhcc bhff bhir bhra biaf biar biba bibb bibi bica bicc bich bici bifa biff bifi biha bihi bira birb biri birr brab brac braf brah brai brca brcb brfc bria bric brih brrr caaa caab caac caaf caah caba cabf cabi cac- caca cacc cach caci cacr cafa cafb cafc caff caha caia caib caic cair cara carb carc carf cari carr cbac cbar cbbc cbca cbcc cbcr cbfb cbfc cbha cbia cbir cbrh ccaa ccab ccac ccaf ccai ccar ccba ccbc ccca cccb cccc cccf ccci ccfa ccfc ccff ccfi ccha cchr ccic ccii ccir ccra ccrc ccrf ccri cfaa cfab cfac cfar cfbc cfbr cfca cfcb cfcf cffb cffr cfia cfra cfrb chaa chab chac chaf chah chai char chca chch chci chfa chfc chfi chfr chha chia chib chic chif chih chir chra chrb chrc chrf chrr ciaa ciar ciba cibc cibi cica cicc cich cici cicr cifa ciff cihr ciia ciii cira cirb circ cirh ciri cirr crab crac craf crai crar crbc crca crcc crcr crfc cria crib cric crif faaa faac faah faba fabi faca facc fach fafa fafc faff fafi faha fahr fair fara farb farc farr fbar fcab fcar fcba fcca fccf fcch fcic fcii fcra ffar ffcc ffff ffii ffrr fhci fiaa fiac fiaf fiar fiba fica ficc fich fifa fifc fiff fifi fiii fira frab frac frbc frcc frfc fria frib fric h-ii haab haaf haar haba habi hafb haff haha haif hair hara harc harf harh hari harr hbar hbfc hbic hcbc hcca hccb hccc hcch hcfa hcfc hchi hfba hhaa hhhh hi-c hiaa hiab hiar hiba hibi hicc hich hifa hiff hifh hifi hifr hihc hihi hira hirf hiri hrac hrfc hrib hrrc iaaa iaac iaai iaba iaca iacc iacr iafc iaff iahc iaia iara iarc ibac ibar ibca ibfi ibia ibra ibrc ibri icaa icab icac icaf icai icar icbc icca iccb iccc iccf icci iccr icfb ichc ichi ichr icra icrc icrf icrr ifaa ifac ifar ifbb ific ifra ifrb ifrf ifri ihab ihba ihcc ihra ihrc iiac iica iifa iiii iira iirc irac iraf irai irar irca ircc iri- iria iric irra irrc irri raab raaf raba rabb rabi rac- raca racc rach raci rafa rafc raff rafi raha rahi rahr raia raic raif raii rair rara rarb rarf rari rbaf rbbb rbbr rcac rcaf rcbc rccb rccc rcfc rchb rcic rffc rfic rhib riaa riab riah riai rib- riba rica ricc rich rifa riff riha riia riif riri rrah rrfc rrif rrrr