c-- ccc cce ccg ccn cco ce- cec cee ceg cen ceo cgc cge cgg cgn cgo cn- cnc cne cng cnn cno co- coc coe cog con coo ec- ecc ece ecg ecn eco eec eee eeg een eeo egc ege egg egn ego en- enc ene eng enn eno eo- eoc eoe eog eon eoo gcc gce gcg gcn gco ge- gec gee geg gen geo ggc ggg ggn ggo gnc gne gnn gno goc goe gog gon goo ncc nce ncg ncn nco ne- nec nee neg nen neo ngc nge ngg ngn ngo nnc nne nng nnn nno no- noc noe nog non noo oc- occ ocg ocn oco oec oee oeg oen oeo ogc oge ogg ogn ogo on- onc one ong onn ono oo- ooc oog oon ooo