-ic a-a a-b a-c a-i aaa aab aac aad aah aai aan aao aar ab- aba abb abc abd abh abi abn abo abr ac- aca acb acc acd ach aci acn aco acr ad- ada adb adc add adh adi adn ado adr aha ahb ahc ahd ahh ahi ahn aho ahr ai- aia aib aic aid aih aii ain aio air an- ana anb anc and anh ani ann ano anr aoa aob aoc aod aoh aoi aon aoo aor ar- ara arb arc ard arh ari arn aro arr baa bab bac bad bah bai ban bao bar bba bbb bbc bbd bbh bbi bbn bbo bbr bca bcb bcc bcd bch bci bcn bco bcr bda bdb bdc bdd bdh bdi bdo bdr bha bhb bhc bhd bhh bhi bho bhr bi- bia bib bic bid bih bii bin bio bir bna bnb bnc bnd bni bnn bno bnr boa bob boc bod boh boi bon boo bor bra brb brd brh bri brn bro brr c-- caa cab cac cad cah cai can cao car cba cbb cbc cbd cbh cbi cbn cbo cbr cca ccb ccc ccd cch cci ccn cco ccr cda cdb cdc cdd cdh cdi cdn cdo cdr ch- cha chb chc chd chh chi chn cho chr ci- cia cib cic cid cih cii cin cio cir cn- cna cnb cnc cnd cnh cni cnn cno cnr co- coa cob coc cod coh coi con coo cor cra crb crc crd crh cri crn cro crr daa dab dac dad dah dai dan dao dar dba dbb dbc dbd dbh dbi dbn dbo dbr dca dcb dcc dcd dci dcn dco dcr dda ddb ddc ddd ddh ddi ddn ddo ddr dh- dha dhb dhc dhd dhh dhi dho dhr di- dia dib dic did dih dii din dio dir dna dnb dnc dnd dnh dni dnn dno dnr doa dob doc dod doh doi don doo dor dra drb drc drd dri drn dro drr h-i haa hab hac had hah hai han hao har hba hbb hbc hbd hbh hbi hbn hbo hbr hca hcb hcc hcd hch hci hcn hco hcr hda hdb hdc hdd hdh hdi hdn hdo hdr hha hhb hhc hhd hhh hhi hhn hho hhr hia hib hic hid hih hii hin hio hir hna hnb hnc hnd hnh hnn hno hoa hob hoc hod hoh hoi hon hoo hor hr- hra hrb hrc hrd hrh hri hrn hro hrr i-d ia- iaa iab iac iad iah iai ian iao iar iba ibb ibc ibd ibh ibi ibn ibo ibr ica icb icc icd ich ici icn ico icr ida idb idc idd idh idi idn ido idr iha ihb ihc ihd ihh ihi ihn iho ihr iia iib iic iid iih iii iin iio iir in- ina inb inc ind inh ini inn ino inr io- ioa iob ioc iod ioh ioi ion ioo ior ir- ira irb irc ird iri irn iro irr n-i naa nab nac nad nah nai nan nao nar nba nbb nbc nbd nbi nbn nbo nbr nca ncb ncc ncd nch nci ncn nco ncr nda ndb ndc ndd ndh ndi ndn ndo ndr nha nhb nhc nhd nhh nhi nhn nhr nia nib nic nid nih nii nin nio nir nna nnb nnc nnh nni nnn nno no- noa nob noc nod noh noi non noo nor nra nrb nrc nrd nri nrn nro nrr o-i oaa oab oac oad oah oai oan oao oar ob- oba obb obc obd obh obi obn obo obr oc- oca ocb occ ocd och oci ocn oco ocr oda odb odc odd odh odi odn odo odr oha ohc ohd ohh ohi ohn oho ohr oia oib oic oid oii oin oio oir on- ona onb onc ond onh oni onn ono onr oo- ooa oob ooc ood ooh ooi oon ooo oor or- ora orb orc ord orh ori orn oro orr ra- raa rab rac rad rah rai ran rao rar rba rbb rbc rbd rbh rbi rbn rbo rbr rca rcb rcc rcd rch rci rcn rco rcr rda rdb rdc rdd rdh rdi rdn rdo rdr rh- rha rhb rhc rhd rhh rhi rhn rho rhr ria rib ric rid rih rii rin rio rir rna rnb rnc rnd rnh rni rnn rno rnr roa rob roc rod roh roi ron roo ror rra rrb rrc rrd rrh rri rrn rrr