-er a-a a-c a-t a-z aaa aac aae aar aas aat aau aaz ac- aca acc ace acr acs act acu acz aea aec aee aer aes aet aeu aez ar- ara arc are arr ars art aru arz as- asa asc ase asr ass ast asu asz at- ata atc ate atr ats att atu atz au- aua auc aue aur aus aut auz az- aza aze azs azt azu azz c-- caa cac cae car cas cat cau caz cca ccc cce ccr ccs cct ccu ccz ce- cea cec cee cer ces cet ceu cez cra crc cre crr crs crt cru crz csa csc cse csr css cst csu csz cta ctc cte ctr cts ctt ctu ctz cua cuc cue cur cus cut cuu cuz cz- czc cze czt eaa eac eae ear eas eat eau eaz ec- eca ecc ece ecr ecs ect ecu eea eec eee eer ees eet era erc ere err ers ert eru erz es- esa esc ese esr ess est esu eta etc ete etr ets ett etu etz eu- eua euc eue eur eus eut eze ezr ezs ezz ra- raa rac rae rar ras rat rau raz rca rcc rce rcr rcs rct rcu re- rea rec ree rer res ret reu rez rra rrc rrr rrs rrt rru rsa rsc rse rsr rss rst rsu rta rtc rte rtr rts rtt rtu rtz rua ruc rue rur rus rut ruu ruz rza rze saa sac sae sar sas sat sau saz sca scc sce scr scs sct scu se- sea sec see ser ses set seu sez sr- sra src sre srr srs srt ss- ssa ssc sse ssr sss sst ssu ssz sta stc ste str sts stt stu stz sua suc sue sur sus sut suu suz sza sze szr szu taa tac tae tar tas tat tau taz tca tcc tce tcr tcs tct tcu te- tea tec tee ter tes tet teu tez tra trc tre trr trs trt tru trz tsa tsc tse tsr tss tst tsu tta ttc tte ttr tts ttt ttu tua tuc tue tur tus tut tuu tuz tza tze tzs tzu ua- uaa uac uae uar uas uat uau uaz uca ucc uce ucr ucs uct ucu uea uec uee uer ues uet ur- ura urc ure urr urs urt uru urz usa usc use usr uss ust usu usz uta utc ute utr uts utt utu utz uua uuc uue uur uus uut uuu uza uzu zaa zac zar zas zat zaz zce zcs zea zec zee zer zes zet zez zrs zsa zse zst zsu zsz zta zte ztr zuc zur zus zut zuz zzr zzs zzt zzz