a-a a-c aaa aac aah aan aao aar ac- aca acc ach acn aco acr aha ahc ahh ahn aho ahr an- ana anc anh ann ano anr aoa aoc aoh aon aoo aor ar- ara arc arh arn aro arr c-- caa cac cah can cao car cca ccc cch ccn cco ccr ch- cha chc chh chn cho chr cn- cna cnc cnh cnn cno cnr co- coa coc coh con coo cor cra crc crh crn cro crr haa hac hah han hao har hca hcc hch hcn hco hcr hha hhc hhh hhn hho hhr hna hnc hnh hnn hno hoa hoc hoh hon hoo hor hr- hra hrc hrh hrn hro hrr naa nac nah nan nao nar nca ncc nch ncn nco ncr nha nhc nhh nhn nhr nna nnc nnh nnn nno no- noa noc noh non noo nor nra nrc nrn nro nrr oaa oac oah oan oao oar oc- oca occ och ocn oco ocr oha ohc ohh ohn oho ohr on- ona onc onh onn ono onr oo- ooa ooc ooh oon ooo oor or- ora orc orh orn oro orr ra- raa rac rah ran rao rar rca rcc rch rcn rco rcr rh- rha rhc rhh rhn rho rhr rna rnc rnh rnn rno rnr roa roc roh ron roo ror rra rrc rrh rrn rrr