-ic c-- ccc cce ccf ccg cci cco ccs ce- cec cee cef ceg cei ceo ces cfc cfe cff cfg cfi cfo cfs cgc cge cgg cgi cgo cgs ci- cic cie cif cig cii cio cis co- coc coe cof cog coi coo cos csc cse csf csg csi cso css ec- ecc ece ecf ecg eci eco ecs eec eee eef eeg eeo ees ef- efc efe eff efg efi efo efs egc ege egf egg egi ego egs eic eie eif eig eii eio eis eo- eoc eoe eof eog eoi eoo eos es- esc ese esf esg esi eso ess fcc fce fcf fcg fci fco fcs fec fee fef feg fei feo fes ffc ffe fff ffg ffi ffo ffs fgc fge fgf fgg fgi fgs fic fie fif fig fii fis foc foe fof fog foi foo fos fsc fse fsf fsg fsi fso fss gcc gce gcf gcg gci gco gcs ge- gec gee gef geg gei geo ges gfc gfe gff gfi gfo gfs ggc ggg ggi ggo ggs gic gie gif gig gii gio gis goc goe gof gog goi goo gos gsc gse gsf gsg gsi gso gss i-f icc ice icf icg ici ico ics ie- iec iee ief ieg iei ies ifc ife iff ifg ifi ifo ifs igc ige igf igg igi igo igs iic iie iif iii iio iis io- ioc ioe iof iog ioi ioo ios is- isc ise isf isg isi iso iss o-i oc- occ ocf ocg oci oco ocs oec oee oef oeg oei oeo oes of- ofc ofe off ofg ofi ofo ofs ogc oge ogf ogg ogi ogo ogs oic oie oif oii oio ois oo- ooc oof oog ooi ooo oos os- osc ose osf osg osi oso oss scc sce scf scg sci sco scs se- sec see sef seg sei seo ses sfc sfe sff sfg sfi sfo sfs sgc sge sgf sgg sgi sgo sgs sic sie sif sig sii sio sis soc soe sof sog soi soo sos ss- ssc sse ssf ssg ssi sso sss