-ol c-- ccc ccd cce cch ccl cco ccs cdc cdd cde cdh cdl cdo cds ce- cec ced cee ceh cel ceo ces ch- chc chd che chh chl cho chs cl- clc cld cle clh cll clo cls co- coc cod coe coh col coo cos csc csd cse csh csl cso css dcc dcd dce dcl dco dcs ddc ddd dde ddh ddl ddo dds de- dec ded dee deh del deo des dh- dhc dhd dhe dhh dhl dho dhs dl- dlc dld dle dlh dll dlo dls doc dod doe doh dol doo dos dsc dsd dse dsh dsl dso dss ec- ecc ecd ece ech ecl eco ecs ed- edc edd ede edh edl edo eds eec eed eee eel eeo ees ehc ehd ehe ehh ehl eho ehs elc eld ele elh ell elo els eo- eoc eod eoe eoh eol eoo eos es- esc esd ese esh esl eso ess hcc hcd hce hch hcl hco hcs hdc hdd hde hdh hdl hdo hds he- hec hed hee heh hel heo hes hhc hhd hhe hhh hhl hho hhs hlc hld hle hlh hll hlo hls hoc hod hoe hoh hol hoo hos hsc hsd hse hsh hsl hss lcc lcd lce lch lcl lco lcs ldc ldd lde ldh ldl ldo lds lec led lee leh lel leo les lhc lhd lhh lho lhs llc lld lle lll llo lls loc lod loe loh lol loo los lsc lsd lse lsh lsl lso lss oc- occ ocd och ocl oco ocs odc odd ode odh odl odo ods oec oed oee oeh oel oeo oes ohc ohd ohe ohh ohl oho ohs olc old ole oll olo ols oo- ooc ood ooh ool ooo oos os- osc osd ose osh osl oso oss scc scd sce sch scl sco scs sdc sdd sde sdh sdl sdo sds se- sec sed see seh sel seo ses sh- shc shd she shh shl sho shs slc sld sle slh sll slo sls soc sod soe soh sol soo sos ss- ssc ssd sse ssh ssl sso sss