-ic a-a a-b a-c a-i aaa aab aac aad aai aao aau ab- aba abb abc abd abi abo abu ac- aca acb acc acd aci aco acu ad- ada adb adc add adi ado adu ai- aia aib aic aid aii aio aiu aoa aob aoc aod aoi aoo aou au- aua aub auc aud aui auo b-u baa bab bac bad bai bao bau bba bbb bbc bbd bbi bbo bbu bca bcb bcc bcd bci bco bcu bda bdb bdc bdd bdi bdo bdu bi- bia bib bic bid bii bio biu boa bob boc bod boi boo bou bua bub buc bud bui buo buu c-- caa cab cac cad cai cao cau cba cbb cbc cbd cbi cbo cbu cca ccb ccc ccd cci cco ccu cda cdb cdc cdd cdi cdo cdu ci- cia cib cic cid cii cio ciu co- coa cob coc cod coi coo cou cua cub cuc cud cui cuo cuu daa dab dac dad dai dao dau dba dbb dbc dbd dbi dbo dbu dca dcb dcc dcd dci dco dcu dda ddb ddc ddd ddi ddo ddu di- dia dib dic did dii dio diu doa dob doc dod doi doo dou dua dub duc dud dui duo i-d ia- iaa iab iac iad iai iao iau iba ibb ibc ibd ibi ibo ibu ica icb icc icd ici ico icu ida idb idc idd idi ido idu iia iib iic iid iii iio iiu io- ioa iob ioc iod ioi ioo iou iu- iua iub iuc iud iui o-i oaa oab oac oad oai oao oau ob- oba obb obc obd obi obo obu oc- oca ocb occ ocd oci oco ocu oda odb odc odd odi odo odu oia oib oic oid oii oio oiu oo- ooa oob ooc ood ooi ooo ou- oua ouc oud oui ouo ua- uaa uab uac uad uai uao uau uba ubb ubc ubi ubo ubu uca ucb ucc ucd uci uco ucu uda udb udc udd udi udo udu uia uib uic uid uii uio uiu uoa uob uoc uod uoo uua uuc uuu