-ing cccc ccci ccgc ccic ccii ccir ccnc ccni ccnr ccoc ccrc ccrg ccri cgcc cgcg cgro cicc cici cico cicr cigi ciii cin- cinc cing cini cino cion cior circ ciri ciro cirr cnci cnco cngi cnic cnrc cnrr coco cogi cogo coin coir con- conc cong coni conn cono coon cor- corc corg cori corn coro corr crcc crcr cric crig crin croc cron croo cror gc-c gccc gcic gcii gcrg gggg ggrn gicr gigg gigi gign gigo ging gini ginn gino giog gioi gion girg giri girn giro girr gncc gngc gnin gnoo gnrc gnrr gocr gogi gogo goin gon- gong goni gonn gono goog gooi goon goor gorg gori gorn goro gorr grcc gric grig grin grni groc grog groi gron groo gror grrr i-go i-no iccc icci iccn icco iccr icgc icnc icoc icon icor icrc icrr igcc igni igno igon igoo igor igri iiii iiio iino iioi iioo iirc inci inco incr ingo inig inni inno innr ino- inoi inon inor inri inro iocg ioci ioii ioio ioni ionn iono iooi iooo iorg iori ircc ircg iri- iric irig irin irio iroc iron irrc irri n-ii nccc ncci nccn nccr ncgr ncnc ncoc ncor ncrc ncri ngic ngio ngon ngor ngri nicc nici nico nigc nigg nigo niir ning nini nino niog nion nioo niro nngn nnnn noci noco nogg nogo noin noio noir non- nong noni nonn nono noo- noon nooo noor nor- norc norg nori norn noro norr nric nroc nron nrrc occc occi occn ocin ocon ocro ocrr oggi ogin ogni ogog ogoi ogon ogri ogro oici oigo oiii oion onc- onco ongi ongo onic onir onni onno onon onor oocr oooo orci orco orgn orgo ori- oric orig orin orio ornc orni orno oro- oron oror orri orro rccc rcgc rcic rcnr rcon rcrg ricc rico rigg rigi rigo riin ring rinn rino rion riri rnco rnin rocc roco rogg rogi rogo roig roin roio roir ronc rong roni rono roog rooi roon roor rorc rori roro rrrr