-er -ic c-- ccc cce cci cco ccr ccs ccu ccz ce- cec cee cei ceo cer ces ceu cez ci- cic cie cii cio cir cis ciu co- coc coe coi coo cor cos cou coz crc cre cri cro crr crs cru crz csc cse csi cso csr css csu csz cuc cue cui cuo cur cus cuu cuz cz- czc cze czo ec- ecc ece eci eco ecr ecs ecu eec eee eeo eer ees eic eie eii eio eir eis eiu eo- eoc eoe eoi eoo eor eos eou erc ere eri ero err ers eru erz es- esc ese esi eso esr ess esu eu- euc eue eui eur eus eze ezo ezr ezs ezz icc ice ici ico icr ics icu icz ie- iec iee iei ier ies iic iie iii iio iir iis iiu io- ioc ioe ioi ioo ior ios iou ir- irc ire iri iro irr irs iru is- isc ise isi iso isr iss isu iu- iuc iue iui iur ius iuz ize izi izo izu izz o-i oc- occ oci oco ocr ocs ocu ocz oec oee oei oeo oer oes oic oie oii oio oir ois oiu oiz oo- ooc ooi ooo oor oos or- orc ore ori oro orr ors oru orz os- osc ose osi oso osr oss osu ou- ouc oue oui ouo our ous oze ozo ozs ozu ozz rcc rce rci rco rcr rcs rcu re- rec ree rei reo rer res reu rez ric rie rii rio rir ris riz roc roe roi roo ror ros rou roz rrc rri rrr rrs rru rsc rse rsi rso rsr rss rsu ruc rue rui ruo rur rus ruu ruz rze rzo scc sce sci sco scr scs scu se- sec see sei seo ser ses seu sez sic sie sii sio sir sis siu soc soe soi soo sor sos sou soz sr- src sre sri sro srr srs ss- ssc sse ssi sso ssr sss ssu ssz suc sue sui suo sur sus suu suz sze szi szr szu ucc uce uci uco ucr ucs ucu uec uee uei uer ues uic uie uii uio uir uis uiu uoc uoe uoo uor uos ur- urc ure uri uro urr urs uru urz usc use usi uso usr uss usu usz uuc uue uur uus uuu uzi uzo uzu zce zco zcs zec zee zeo zer zes zez zie zio zir zis ziz zo- zoc zoe zoi zoo zor zos zou zro zrs zse zsi zsu zsz zuc zui zur zus zuz zzr zzs zzz