-er -ic c-- ccc cce ccf cci cck ccr ccs ccu ccz ce- cec cee cef cei cek ceq cer ces ceu cez cfc cfe cff cfi cfk cfq cfr cfs cfu cfz ci- cic cie cif cii cik ciq cir cis ciu ckc cki cks cqc cqf cqi cqs crc cre crf cri crk crq crr crs cru crz csc cse csf csi csk csq csr css csu csz cuc cue cuf cui cuk cuq cur cus cuu cuz cz- czc cze czk ec- ecc ece ecf eci eck ecq ecr ecs ecu eec eee eef eek eer ees ef- efc efe eff efi efr efs eic eie eif eii eik eir eis eiu ekc eke ekf eki ekr eks eku eqe eqf eqq eqs equ erc ere erf eri erk erq err ers eru erz es- esc ese esf esi esk esq esr ess esu eu- euc eue euf eui eur eus eze ezf ezr ezs ezz fcc fce fcf fci fck fcr fcs fcu fcz fec fee fef fei fek fer fes feu fez ffc ffe fff ffi ffk ffr ffs ffu ffz fic fie fif fii fik fiq fir fis fiu fiz fkc fkf fki fkk frc fre frf fri frk frq frr frs fru fsc fse fsf fsi fsk fsq fsr fss fsu fue fuf fui fuk fur fus fuu i-f icc ice icf ici ick icq icr ics icu icz ie- iec iee ief iei iek ier ies ifc ife iff ifi ifr ifs ifu ifz iic iie iif iii iir iis iiu ikc ike ikf iki ikk ikr iks iku iqc iqe iqs iqu ir- irc ire irf iri irk irq irr irs iru is- isc ise isf isi isk isq isr iss isu iu- iuc iue iui iur ius iuz ize izi izu izz k-z kcc kce kci kck kcr kcs kcu ke- kec kee kef kei kek ker kes kez kfc kff kfi kfs kfu kic kie kif kii kik kir kis kiu kiz kkc kke kki kkk kkr kks kku krc krf kri krk krr krs kru ksc kse ksf ksi ksk ksr kss ksu kuc kue kui kuk kur kus kuu qcc qci qcs qec qee qef qfc qfe qff qfi qfs qic qie qik qir qis qiu qiz qki qqk qqq qqu qrc qre qri qrs qru qsc qsi qsr qu- que qui qur qus rcc rce rcf rci rcr rcs rcu re- rec ree ref rei rek req rer res reu rez rfc rfe rff rfi rfk rfq rfr rfs rfu rfz ric rie rif rii rik riq rir ris riz rkc rke rkf rkk rks rku rkz rqc rqs rrc rrf rri rrk rrq rrr rrs rru rsc rse rsf rsi rsk rsq rsr rss rsu ruc rue ruf rui ruk rur rus ruu ruz rze scc sce scf sci sck scr scs scu se- sec see sef sei sek seq ser ses seu sez sfc sfe sff sfi sfk sfr sfs sfu sfz sic sie sif sii sik siq sir sis siu sk- skc ske skf ski skk skq skr sks sku sqi sqq sqr sqs sr- src sre srf sri srk srq srr srs ss- ssc sse ssf ssi ssk ssq ssr sss ssu ssz suc sue suf sui suk suq sur sus suu suz sze szi szr szu ucc uce ucf uci uck ucr ucs ucu uec uee uef uei uer ues ufc ufe uff ufi ufr ufs ufu uic uie uif uii uiq uir uis uiu ukc uke ukf uki ukk ukr uku ukz ur- urc ure urf uri urk urr urs uru urz usc use usf usi usk usr uss usu usz uuc uue uur uus uuu uzi uzu zce zcq zcs zec zee zef zek zeq zer zes zez zfc zfr zfs zie zif zik zir zis ziz zks zrs zse zsi zsu zsz zuc zui zuk zur zus zuz zzr zzs zzz