-ic a-a a-b a-c a-i aaa aab aac aah aai aan aao aar ab- aba abb abc abh abi abn abo abr ac- aca acb acc ach aci acn aco acr aha ahb ahc ahh ahi ahn aho ahr ai- aia aib aic aih aii ain aio air an- ana anb anc anh ani ann ano anr aoa aob aoc aoh aoi aon aoo aor ar- ara arb arc arh ari arn aro arr baa bab bac bah bai ban bao bar bba bbb bbc bbh bbi bbn bbo bbr bca bcb bcc bch bci bcn bco bcr bha bhb bhc bhh bhi bho bhr bi- bia bib bic bih bii bin bio bir bna bnb bnc bni bnn bno bnr boa bob boc boh boi bon boo bor bra brb brh bri brn bro brr c-- caa cab cac cah cai can cao car cba cbb cbc cbh cbi cbn cbo cbr cca ccb ccc cch cci ccn cco ccr ch- cha chb chc chh chi chn cho chr ci- cia cib cic cih cii cin cio cir cn- cna cnb cnc cnh cni cnn cno cnr co- coa cob coc coh coi con coo cor cra crb crc crh cri crn cro crr h-i haa hab hac hah hai han hao har hba hbb hbc hbh hbi hbn hbo hbr hca hcb hcc hch hci hcn hco hcr hha hhb hhc hhh hhi hhn hho hhr hia hib hic hih hii hin hio hir hna hnb hnc hnh hnn hno hoa hob hoc hoh hoi hon hoo hor hr- hra hrb hrc hrh hri hrn hro hrr ia- iaa iab iac iah iai ian iao iar iba ibb ibc ibh ibi ibn ibo ibr ica icb icc ich ici icn ico icr iha ihb ihc ihh ihi ihn iho ihr iia iib iic iih iii iin iio iir in- ina inb inc inh ini inn ino inr io- ioa iob ioc ioh ioi ion ioo ior ir- ira irb irc iri irn iro irr n-i naa nab nac nah nai nan nao nar nba nbb nbc nbi nbn nbo nbr nca ncb ncc nch nci ncn nco ncr nha nhb nhc nhh nhi nhn nhr nia nib nic nih nii nin nio nir nna nnb nnc nnh nni nnn nno no- noa nob noc noh noi non noo nor nra nrb nrc nri nrn nro nrr o-i oaa oab oac oah oai oan oao oar ob- oba obb obc obh obi obn obo obr oc- oca ocb occ och oci ocn oco ocr oha ohc ohh ohi ohn oho ohr oia oib oic oii oin oio oir on- ona onb onc onh oni onn ono onr oo- ooa oob ooc ooh ooi oon ooo oor or- ora orb orc orh ori orn oro orr ra- raa rab rac rah rai ran rao rar rba rbb rbc rbh rbi rbn rbo rbr rca rcb rcc rch rci rcn rco rcr rh- rha rhb rhc rhh rhi rhn rho rhr ria rib ric rih rii rin rio rir rna rnb rnc rnh rni rnn rno rnr roa rob roc roh roi ron roo ror rra rrb rrc rrh rri rrn rrr