-er c-- ccc ccd cce cck ccl ccr cct ccu cdc cdd cde cdk cdl cdr cdt cdu ce- cec ced cee cek cel cer cet ceu ckc ckd ckt cl- clc cld cle clk cll clr clt clu crc crd cre crk crl crr crt cru ctc ctd cte ctk ctl ctr ctt ctu cuc cud cue cuk cul cur cut cuu dcc dcd dce dck dcl dcr dct dcu ddc ddd dde ddk ddl ddr ddt ddu de- dec ded dee dek del der det deu dkc dke dkk dkl dkr dkt dku dl- dlc dld dle dlk dll dlr dlt dlu drc drd dre drk drl drr drt dru dtc dtd dte dtk dtl dtr dtt dtu duc dud due duk dul dur dut ec- ecc ecd ece eck ecl ecr ect ecu ed- edc edd ede edk edl edr edt edu eec eed eee eek eel eer eet ekc ekd eke ekl ekr ekt eku elc eld ele elk ell elr elt elu erc erd ere erk erl err ert eru etc etd ete etk etl etr ett etu eu- euc eud eue eul eur eut k-t kcc kcd kce kck kcl kcr kct kcu kdc kde kdk kdl kdr kdt kdu ke- kec ked kee kek kel ker ket kkc kke kkk kkl kkr kkt kku kl- klc kld klr klt klu krc krd krk krl krr krt kru ktc kte ktk ktl ktr ktt ktu kuc kud kue kuk kul kur kut kuu lcc lcd lce lck lcl lcr lct lcu ldc ldd lde ldk ldl ldr ldt ldu lec led lee lek lel ler let leu lkl lkr lkt llc lld lle llk lll llr llt llu lrc lrd lrk lrr lrt lru ltc ltd lte ltk ltl ltr ltt ltu luc lud lue luk lul lur lut luu rcc rcd rce rcl rcr rct rcu rdc rdd rde rdl rdr rdt rdu re- rec red ree rek rel rer ret reu rkc rke rkk rkt rku rlc rld rle rll rlr rlt rlu rrc rrd rrk rrl rrr rrt rru rtc rtd rte rtk rtl rtr rtt rtu ruc rud rue ruk rur rut ruu tcc tcd tce tck tcl tcr tct tcu tdc tdd tde tdk tdl tdr tdt tdu te- tec ted tee tek tel ter tet teu tkc tke tkk tkl tkr tkt tlc tld tle tlk tll tlr tlt tlu trc trd tre trk trl trr trt tru ttc ttd tte ttk ttl ttr ttt ttu tuc tud tue tuk tul tur tut tuu ucc ucd uce uck ucl ucr uct ucu udc udd ude udk udl udr udt udu uec ued uee uel uer uet ukc uke ukk ukl ukr uku ulc uld ule ulk ull ulr ult ulu ur- urc urd ure urk url urr urt uru utc utd ute utk utl utr utt utu uuc uue uur uut uuu