-er -th a-a a-c a-t aaa aac aae aah aar aat aau aax ac- aca acc ace ach acr act acu acx aea aec aee aeh aer aet aeu aex aha ahc ahe ahh ahr aht ahu ahx ar- ara arc are arh arr art aru arx at- ata atc ate ath atr att atu atx au- aua auc aue auh aur aut aux ax- axa axe axh axr axt axx c-- caa cac cae cah car cat cau cax cca ccc cce cch ccr cct ccu ccx ce- cea cec cee ceh cer cet ceu cex ch- cha chc che chh chr cht chu chx cra crc cre crh crr crt cru crx cta ctc cte cth ctr ctt ctu ctx cua cuc cue cuh cur cut cuu cxc cxh cxr cxt cxx eaa eac eae eah ear eat eau eax ec- eca ecc ece ech ecr ect ecu ecx eea eec eee eer eet eex eha ehc ehe ehh ehr eht ehu era erc ere erh err ert eru eta etc ete eth etr ett etu etx eu- eua euc eue eur eut eux ex- exa exc exe exh exr ext exu exx haa hac hae hah har hat hau hax hca hcc hce hch hcr hct he- hea hec hee heh her het heu hex hha hhc hhe hhh hhr hht hhu hr- hra hrc hre hrh hrr hrt hru hta htc hte hth htr htt htx hua huc hue huh hur hut huu hux hxc ra- raa rac rae rah rar rat rau rax rca rcc rce rch rcr rct rcu rcx re- rea rec ree reh rer ret reu rex rh- rha rhc rhe rhh rhr rht rhu rra rrc rrh rrr rrt rru rta rtc rte rtr rtt rtu rtx rua ruc rue ruh rur rut ruu rux rxr t-x taa tac tae tah tar tat tau tax tca tcc tce tch tcr tct tcu tcx te- tea tec tee teh ter tet teu tex th- tha thc the thh thr tht thu thx tra trc tre trh trr trt tru trx tta ttc tte tth ttr ttt ttu ttx tua tuc tue tuh tur tut tuu tux txe txt txu ua- uaa uac uae uah uar uat uau uca ucc uce uch ucr uct ucu uea uec uee ueh uer uet uha uhc uhe uhh uhr uht uhu ur- ura urc ure urr urt uru urx uta utc ute uth utr utt utu utx uua uuc uue uur uut uuu uxc uxr uxt uxu xaa xac xar xat xau xch xcr xcx xee xer xet xeu xex xht xrc xrt xrx xtc xtr xtx xue xxx