-ic a-a a-b a-c a-i a-z aaa aab aac aai aao aav aaz ab- aba abb abc abi abo abv abz ac- aca acb acc aci aco acv acz ai- aia aib aic aii aio aiv aiz aoa aob aoc aoi aoo aov av- ava avb avc avi avo avz az- aza azb azi azo azz baa bab bac bai bao bav baz bba bbb bbc bbi bbo bca bcb bcc bci bco bcv bcz bi- bia bib bic bii bio biv biz boa bob boc boi boo bov boz bva bvb bvc bvi bvo bvv bza bzo bzz c-- caa cab cac cai cao cav caz cba cbb cbc cbi cbo cbv cbz cca ccb ccc cci cco ccv ccz ci- cia cib cic cii cio civ co- coa cob coc coi coo cov coz cva cvb cvc cvi cvo cvv cvz cz- czc czo i-v ia- iaa iab iac iai iao iav iaz iba ibb ibc ibi ibo ibv ibz ica icb icc ici ico icv icz iia iib iic iii iio io- ioa iob ioc ioi ioo iov iva ivb ivc ivi ivo ivv iza izi izo izz o-i oaa oab oac oai oao oav ob- oba obb obc obi obo obv oc- oca ocb occ oci oco ocv ocz oia oib oic oii oio oiv oiz oo- ooa oob ooc ooi ooo oov ov- ova ovb ovc ovi ovo ovv oza ozo ozz v-a vaa vab vac vai vao vav vaz vba vbc vbi vbo vbv vbz vca vcc vci vco vi- via vib vic vii vio viv viz voa vob voc voi voo vov voz vva vvb vvc vvi vvo vvv vvz zaa zab zac zai zao zav zaz zbb zbc zbv zco zia zib zio ziv ziz zo- zoa zob zoc zoi zoo zvi zzz