-er a-a a-c aaa aac aae aah aar aau aav aax ac- aca acc ace ach acr acu acv acx aea aec aee aeh aer aeu aev aex aha ahc ahe ahh ahr ahu ahv ahx ar- ara arc are arh arr aru arv arx au- aua auc aue auh aur auv aux av- ava avc ave avh avr avu avx ax- axa axe axh axr axv axx c-- caa cac cae cah car cau cav cax cca ccc cce cch ccr ccu ccv ccx ce- cea cec cee ceh cer ceu cev cex ch- cha chc che chh chr chu chv chx cra crc cre crh crr cru crv crx cua cuc cue cuh cur cuu cuv cva cvc cve cvh cvr cvu cvv cvx cxc cxh cxr cxv cxx eaa eac eae eah ear eau eav eax ec- eca ecc ece ech ecr ecu ecv ecx eea eec eee eer eev eex eha ehc ehe ehh ehr ehu ehv era erc ere erh err eru erv eu- eua euc eue eur euv eux eva evc eve evh evr evv ex- exa exc exe exh exr exu exx haa hac hae hah har hau hav hax hca hcc hce hch hcr hcv he- hea hec hee heh her heu hev hex hha hhc hhe hhh hhr hhu hhv hr- hra hrc hre hrh hrr hru hrv hua huc hue huh hur huu huv hux hv- hva hvc hvr hvv hvx hxc ra- raa rac rae rah rar rau rav rax rca rcc rce rch rcr rcu rcv rcx re- rea rec ree reh rer reu rev rex rh- rha rhc rhe rhh rhr rhu rhv rra rrc rrh rrr rru rua ruc rue ruh rur ruu ruv rux rva rvc rve rvh rvr rvu rvv rxr ua- uaa uac uae uah uar uau uav uca ucc uce uch ucr ucu ucv uea uec uee ueh uer uha uhc uhe uhh uhr uhu uhv ur- ura urc ure urr uru urx uua uuc uue uur uuu uva uvc uve uvu uvv uxc uxr uxu v-a v-e vaa vac vae vah var vau vav vax vca vcc vce vch vcr vcu vcx vea vec vee veh ver veu vex vh- vha vhc vhe vhx vra vrc vre vrh vrr vru vue vur vuv vva vvc vvr vvv vxa vxr vxv xaa xac xar xau xav xch xcr xcv xcx xee xer xeu xev xex xrc xrx xue xuv xvh xxv xxx