-er a-a a-b a-c aaa aab aac aae aaf aar aav ab- aba abb abc abe abf abr abv ac- aca acb acc ace acf acr acv aea aeb aec aee aef aer aev af- afa afb afc afe aff afr afv ar- ara arb arc are arf arr arv av- ava avb avc ave avf avr baa bab bac bae baf bar bav bba bbb bbc bbe bbf bbr bca bcb bcc bce bcf bcr bcv be- bea beb bec bee bef ber bev bfa bfb bfc bfe bff bfr bfv bra brb bre brf brr brv bva bvb bvc bve bvr bvv c-- caa cab cac cae caf car cav cba cbb cbc cbe cbf cbr cbv cca ccb ccc cce ccf ccr ccv ce- cea ceb cec cee cef cer cev cfa cfb cfc cfe cff cfr cfv cra crb crc cre crf crr crv cva cvb cvc cve cvf cvr cvv eaa eab eac eae eaf ear eav eba ebb ebc ebe ebf ebr ebv ec- eca ecb ecc ece ecf ecr ecv eea eeb eec eee eef eer eev ef- efa efb efc efe eff efr era erb erc ere erf err erv eva evb evc eve evf evr evv faa fab fac fae faf far fav fba fbb fbc fbe fbf fbr fca fcb fcc fce fcf fcr fcv fea feb fec fee fef fer fev ffa ffc ffe fff ffr ffv fra frb frc fre frf frr fva fvc ra- raa rab rac rae raf rar rav rba rbb rbc rbe rbf rbr rca rcb rcc rce rcf rcr rcv re- rea reb rec ree ref rer rev rfa rfb rfc rfe rff rfr rfv rra rrb rrc rrf rrr rva rvb rvc rve rvf rvr rvv v-a v-e vaa vab vac vae var vav vba vbc vbr vbv vca vcc vce vcf vcr vea veb vec vee vef ver vfa vfb vfc vff vfr vfv vra vrb vrc vre vrf vrr vva vvb vvc vvr vvv

-vac a-be aaaa aaab aaac aaae aaaf aaar aaav aaba aabb aabc aaca aacb aacc aace aacf aacr aacv aaea aaec aaev aafa aafb aafc aaff aara aarc aare aava abaa abab abac abae abaf abar abb- abba abbb abbe abbr abca abcb abcc abcf abcr abec abee aber abff abra abrc abva acaa acab acac acae acar acba acca accc acce accf ace- acea acec acer acev acfc acfe acr- acra acrc acre acrr acrv acvv aeac aeaf aecb aeer aer- aera aerc aeva afaa afar afca afcb afcc afee afer affa affc afr- afra afrc afre arab arac arae araf arar arba arbe arc- arca arce area arec aree aref arev arfa arfb arfc arff arr- arra arrc arre arrr arva arve avab avar avcc avce avea avec aver avra avre avva baaa baaf baar baba babb babe babr bac- baca bacc bace baer bafc baff bar- bara barb barc bare barf barr bava bave bbbb bbeb bbfc bbrc bcaa bcar bcbc bcca bccc bcec bcer bcfc bcra beaf bear beav beba bebb bebe beca beeb beef beer befa befe beff bera berc bere berr bfca brab brac brae braf brav brca brcb brce brea breb brec bree bref brer brev brfc brrr caaa caab caac caaf caba cabe cabf cac- caca cacc cace cacr caec caer cafa cafb cafc cafe caff cara carb carc care carf carr cava cave cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cbef cber cbfb cbfc cbre cbva cbvb cbve cbvf cbvr ccaa ccab ccac ccaf ccar ccba ccbc ccca cccb cccc cccf cccv ccee ccfa ccfc ccff ccra ccrc ccre ccrf ceac cear ceba cec- ceca cece ceeb ceec cef- cefa cefc cer- cera cerc cere cerf ceva cfaa cfab cfac cfae cfar cfav cfbc cfbr cfbv cfca cfcb cfcf cffb cffr cfra cfrb cfre crab crac craf crar crbc crca crcc crce crcr cre- crea creb crec cree crfc cvac cvar cvca cvcc cver cvfr cvra cvrr eaaf eaba eaca eacc eaec eafb eara earb eare eave ebac ebba ebbc ebbr ebcc eber ebfc ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecef ecfa ecfc ecfr ecra ecrc ecrf ecrr ecrv eeca eeea eeee eefa eefe eera eerc eeva efab efbr efca effa eraf erba erbb erbe erca ercc erce ereb erec erer erev erfc erra errc erre erve evac evae evar evea ever evra evre faaa faac faba fabe faca facc face faeb fafa fafc fafe faff fara farb farc fare farr fava favc fave fbar fcab fcar fcba fcca fccf fcra feaf fear feba fece feeb feer fefc fefe feff fera ferb ferc fere ferr ferv feve fevr ffar ffcc ffee ffff ffrr fr-v frab frac frae frbc frcc frea free frfc raab raaf raba rabb rabe rac- raca racc race racv raec raef raer rafa rafc rafe raff rara rarb rare rarf rava rave rbaf rbbb rbbr rcac rcaf rcbc rccb rccc rcfc rcvr rea- reac reae reaf rear reba rebb rebe reca recc rece recr reeb reef reev refe reff refr rera rere reva reve rfae rfef rffc rrfc rrrr rv-c rvca rver vaar vaca vace vafa vara vare varf varr vava vbcc vear veba vecc veer vefa ver- vera verb vere veve vfcc vrac vrav vrba vref vver vvvv

-aaa- aaace aaaee aaarc aabaa aabba aabra aacbc aaeaf abaab ababa ababe abaca abaer abara abare abava abave abbac abbar abccc abear abeba abebe abece abeer abera abere aberr abfab abrac abrar acaca acacb acar- acara acare accra aceae acera acerb acrab acrea acree aeaea aebbe aerva aface afara afare afcea afcec afear afefe afere affer afree ar-ab ara-c arab- araba arabe araca arace araea arara arare arava arave arbab arbar arbee arber arbre arcae arcee areae arear areca areef arere areva arfe arrea arvar arvcf avara avare avber avebe aveer aver- avera averb aveva aveve avree baabe baava babar babec babee baber babra bacab bacar bacca bacea baffa bafra baraa barab barac barar barba barbe barca barce barea