-ic a-a a-b a-c a-i aaa aab aac aag aai aan aao aau ab- aba abb abc abg abi abn abo abu ac- aca acb acc acg aci acn aco acu ag- aga agb agc agg agi agn ago agu ai- aia aib aic aig aii ain aio aiu an- ana anb anc ang ani ann ano anu aoa aob aoc aog aoi aon aoo aou au- aua aub auc aug aui aun auo b-u baa bab bac bag bai ban bao bau bba bbb bbc bbg bbi bbn bbo bbu bca bcb bcc bcg bci bcn bco bcu bga bgb bgc bgg bgi bgn bgo bgu bi- bia bib bic big bii bin bio biu bna bnb bnc bng bni bnn bno bnu boa bob boc bog boi bon boo bou bua bub buc bug bui bun buo buu c-- caa cab cac cag cai can cao cau cba cbb cbc cbg cbi cbn cbo cbu cca ccb ccc ccg cci ccn cco ccu cga cgb cgc cgg cgi cgn cgo cgu ci- cia cib cic cig cii cin cio ciu cn- cna cnb cnc cng cni cnn cno cnu co- coa cob coc cog coi con coo cou cua cub cuc cug cui cun cuo cuu gaa gab gac gag gai gan gao gau gba gbc gbg gbi gbn gbo gbu gca gcb gcc gcg gci gcn gco gcu gga ggb ggc ggg ggi ggn ggo ggu gia gib gic gig gii gin gio giu gna gnb gnc gni gnn gno gnu goa gob goc gog goi gon goo gou gu- gua gub guc gug gui gun guo guu ia- iaa iab iac iag iai ian iao iau iba ibb ibc ibg ibi ibn ibo ibu ica icb icc icg ici icn ico icu iga igb igc igg igi ign igo igu iia iib iic iii iin iio iiu in- ina inb inc ing ini inn ino inu io- ioa iob ioc iog ioi ion ioo iou iu- iua iub iuc iug iui n-i naa nab nac nag nai nan nao nau nba nbb nbc nbg nbi nbn nbo nbu nca ncb ncc ncg nci ncn nco ncu nga ngb ngc ngg ngi ngn ngo ngu nia nib nic nig nii nin nio niu nna nnb nnc nng nni nnn nno nnu no- noa nob noc nog noi non noo nou nua nub nuc nug nui nun nuo nuu o-i oaa oab oac oag oai oan oao oau ob- oba obb obc obg obi obn obo obu oc- oca ocb occ ocg oci ocn oco ocu oga ogc ogg ogi ogn ogo oia oib oic oii oin oio oiu on- ona onb onc ong oni onn ono onu oo- ooa oob ooc oog ooi oon ooo ou- oua ouc oui oun ouo ua- uaa uab uac uag uai uan uao uau uba ubb ubc ubg ubi ubn ubo ubu uca ucb ucc ucg uci ucn uco ucu uga ugb ugc ugg ugi ugn ugo ugu uia uib uic uig uii uin uio uiu un- una unb unc ung uni unn uno unu uoa uob uoc uog uon uoo uua uuc uug uun uuu