-er c-- ccc cce cch cco ccr ccu ce- cec cee ceh ceo cer ceu ch- chc che chh cho chr chu co- coc coe coh coo cor cou crc cre crh cro crr cru cuc cue cuh cuo cur cuu ec- ecc ece ech eco ecr ecu eec eee eeo eer ehc ehe ehh eho ehr ehu eo- eoc eoe eoh eoo eor eou erc ere erh ero err eru eu- euc eue eur hcc hce hch hco hcr he- hec hee heh heo her heu hhc hhe hhh hho hhr hhu hoc hoe hoh hoo hor hou hr- hrc hre hrh hro hrr hru huc hue huh huo hur huu oc- occ och oco ocr ocu oec oee oeh oeo oer ohc ohe ohh oho ohr ohu oo- ooc ooh ooo oor or- orc ore orh oro orr oru ou- ouc oue ouh ouo our rcc rce rch rco rcr rcu re- rec ree reh reo rer reu rh- rhc rhe rhh rho rhr rhu roc roe roh roo ror rou rrc rrh rrr rru ruc rue ruh ruo rur ruu ucc uce uch uco ucr ucu uec uee ueh uer uhc uhe uhh uho uhr uhu uoc uoe uoo uor ur- urc ure uro urr uru uuc uue uur uuu