-er c-- ccc ccd cce cch ccl ccr cdc cdd cde cdh cdl cdr ce- cec ced cee ceh cel cer ch- chc chd che chh chl chr cl- clc cld cle clh cll clr crc crd cre crh crl crr dcc dcd dce dcl dcr ddc ddd dde ddh ddl ddr de- dec ded dee deh del der dh- dhc dhd dhe dhh dhl dhr dl- dlc dld dle dlh dll dlr drc drd dre drl drr ec- ecc ecd ece ech ecl ecr ed- edc edd ede edh edl edr eec eed eee eel eer ehc ehd ehe ehh ehl ehr elc eld ele elh ell elr erc erd ere erh erl err hcc hcd hce hch hcl hcr hdc hdd hde hdh hdl hdr he- hec hed hee heh hel her hhc hhd hhe hhh hhl hhr hlc hld hle hlh hll hlr hr- hrc hrd hre hrh hrl hrr lcc lcd lce lch lcl lcr ldc ldd lde ldh ldl ldr lec led lee leh lel ler lhc lhd lhh lhr llc lld lle lll llr lrc lrd lrh lrr rcc rcd rce rch rcl rcr rdc rdd rde rdh rdl rdr re- rec red ree reh rel rer rh- rhc rhd rhe rhh rhl rhr rlc rld rle rlh rll rlr rrc rrd rrh rrl rrr