-ic a-a a-b a-c a-i aaa aab aac aag aah aai aan aao aar ab- aba abb abc abg abh abi abn abo abr ac- aca acb acc acg ach aci acn aco acr ag- aga agb agc agg agh agi agn ago agr aha ahb ahc ahg ahh ahi ahn aho ahr ai- aia aib aic aig aih aii ain aio air an- ana anb anc ang anh ani ann ano anr aoa aob aoc aog aoh aoi aon aoo aor ar- ara arb arc arg arh ari arn aro arr baa bab bac bag bah bai ban bao bar bba bbb bbc bbg bbh bbi bbn bbo bbr bca bcb bcc bcg bch bci bcn bco bcr bga bgb bgc bgg bgh bgi bgn bgo bgr bha bhb bhc bhg bhh bhi bho bhr bi- bia bib bic big bih bii bin bio bir bna bnb bnc bng bni bnn bno bnr boa bob boc bog boh boi bon boo bor bra brb brg brh bri brn bro brr c-- caa cab cac cag cah cai can cao car cba cbb cbc cbg cbh cbi cbn cbo cbr cca ccb ccc ccg cch cci ccn cco ccr cga cgb cgc cgg cgh cgi cgn cgo cgr ch- cha chb chc chg chh chi chn cho chr ci- cia cib cic cig cih cii cin cio cir cn- cna cnb cnc cng cnh cni cnn cno cnr co- coa cob coc cog coh coi con coo cor cra crb crc crg crh cri crn cro crr gaa gab gac gag gah gai gan gao gar gba gbc gbg gbh gbi gbn gbo gbr gca gcb gcc gcg gch gci gcn gco gcr gga ggb ggc ggg ggh ggi ggn ggo ggr gha ghb ghc ghg ghh ghi ghn gho ghr gia gib gic gig gih gii gin gio gir gna gnb gnc gni gnn gno gnr goa gob goc gog goh goi gon goo gor gra grb grc grg grh gri grn gro grr h-i haa hab hac hag hah hai han hao har hba hbb hbc hbg hbh hbi hbn hbo hbr hca hcb hcc hcg hch hci hcn hco hcr hga hgb hgc hgg hgh hgi hgn hgo hgr hha hhb hhc hhg hhh hhi hhn hho hhr hia hib hic hig hih hii hin hio hir hna hnb hnc hng hnh hnn hno hoa hob hoc hog hoh hoi hon hoo hor hr- hra hrb hrc hrg hrh hri hrn hro hrr ia- iaa iab iac iag iah iai ian iao iar iba ibb ibc ibg ibh ibi ibn ibo ibr ica icb icc icg ich ici icn ico icr iga igb igc igg igh igi ign igo igr iha ihb ihc ihg ihh ihi ihn iho ihr iia iib iic iih iii iin iio iir in- ina inb inc ing inh ini inn ino inr io- ioa iob ioc iog ioh ioi ion ioo ior ir- ira irb irc irg iri irn iro irr n-i naa nab nac nag nah nai nan nao nar nba nbb nbc nbg nbi nbn nbo nbr nca ncb ncc ncg nch nci ncn nco ncr nga ngb ngc ngg ngh ngi ngn ngo nha nhb nhc nhg nhh nhi nhn nhr nia nib nic nig nih nii nin nio nir nna nnb nnc nng nnh nni nnn nno no- noa nob noc nog noh noi non noo nor nra nrb nrc nrg nri nrn nro nrr o-i oaa oab oac oag oah oai oan oao oar ob- oba obb obc obg obh obi obn obo obr oc- oca ocb occ ocg och oci ocn oco ocr oga ogc ogg ogh ogi ogn ogo oha ohc ohg ohh ohi ohn oho ohr oia oib oic oii oin oio oir on- ona onb onc ong onh oni onn ono onr oo- ooa oob ooc oog ooh ooi oon ooo oor or- ora orb orc org orh ori orn oro orr ra- raa rab rac rag rah rai ran rao rar rba rbb rbc rbg rbh rbi rbn rbo rbr rca rcb rcc rcg rch rci rcn rco rcr rga rgb rgc rgg rgh rgi rgn rgo rgr rh- rha rhb rhc rhg rhh rhi rhn rho rhr ria rib ric rig rih rii rin rio rir rna rnb rnc rng rnh rni rnn rno rnr roa rob roc rog roh roi ron roo ror rra rrb rrc rrg rrh rri rrn rrr