decho[9],
dech[8], echo[7], heco[7],
che[6], ech[6], hec[6], hoc[6], och[6], cod[5], doc[5], deo[4], ode[4],
eh[4], he[4], ho[4], oh[4], ce[3], de[3], co[3], do[3], od[3], eo[2],
