-er c-- ccc cce ccn cco ccr ccu ce- cec cee cen ceo ceq cer ceu cn- cnc cne cnn cno cnr cnu co- coc coe con coo coq cor cou cqc cqo crc cre crn cro crq crr cru cuc cue cun cuo cuq cur cuu ec- ecc ece ecn eco ecq ecr ecu eec eee een eeo eer en- enc ene enn eno enr enu eo- eoc eoe eon eoo eoq eor eou eqe eqn eqq equ erc ere ern ero erq err eru eu- euc eue eun eur ncc nce ncn nco ncr ncu ne- nec nee nen neo ner neu nnc nne nnn nno nnu no- noc noe non noo nor nou nqc nrc nre nrn nro nrr nru nuc nue nun nuo nuq nur nuu oc- occ ocn oco ocr ocu oec oee oen oeo oer on- onc one onn ono onr onu oo- ooc oon ooo oor oqo or- orc ore orn oro orr oru ou- ouc oue oun ouo our qcc qco qec qee qen qeo qne qoo qor qqq qqu qrc qre qru qu- que quo qur rcc rce rcn rco rcr rcu re- rec ree ren reo req rer reu rnc rnn rno rnr rnu roc roe ron roo ror rou rqc rqn rrc rrn rrq rrr rru ruc rue run ruo rur ruu ucc uce ucn uco ucr ucu uec uee uen uer un- unc une unn uno unq unr unu uoc uoe uon uoo uor ur- urc ure urn uro urr uru uuc uue uun uur uuu