-ic a-a a-b a-c a-i aaa aab aac aai aan aao aar aax aay ab- aba abb abc abi abn abo abr abx aby ac- aca acb acc aci acn aco acr acx acy ai- aia aib aic aii ain aio air aix aiy an- ana anb anc ani ann ano anr anx any aoa aob aoc aoi aon aoo aor aox ar- ara arb arc ari arn aro arr arx ary ax- axa axi axn axo axr axx ay- aya ayc ayi ayn ayo ayr ayx baa bab bac bai ban bao bar bax bay bba bbb bbc bbi bbn bbo bbr bbx bby bca bcb bcc bci bcn bco bcr bcx bcy bi- bia bib bic bii bin bio bir bix biy bna bnb bnc bni bnn bno bnr bnx boa bob boc boi bon boo bor box boy bra brb bri brn bro brr brx bry bxb bxi bxn bxo bxx by- bya byc byi byn byo byr c-- caa cab cac cai can cao car cax cay cba cbb cbc cbi cbn cbo cbr cbx cby cca ccb ccc cci ccn cco ccr ccx ci- cia cib cic cii cin cio cir cix cn- cna cnb cnc cni cnn cno cnr cnx cny co- coa cob coc coi con coo cor cox coy cra crb crc cri crn cro crr crx cry cxc cxi cxo cxr cxx cya cyb cyc cyn cyo cyr ia- iaa iab iac iai ian iao iar iba ibb ibc ibi ibn ibo ibr ibx iby ica icb icc ici icn ico icr icy iia iib iic iii iin iio iir iix in- ina inb inc ini inn ino inr inx iny io- ioa iob ioc ioi ion ioo ior ir- ira irb irc iri irn iro irr irx iry ixc ixi ixn ixy iya iyc iyo iyr iyy n-i naa nab nac nai nan nao nar nax nay nba nbb nbc nbi nbn nbo nbr nbx nca ncb ncc nci ncn nco ncr ncx nia nib nic nii nin nio nir nix nna nnb nnc nni nnn nno no- noa nob noc noi non noo nor nox noy nra nrb nrc nri nrn nro nrr nrx nry nxc nya nyc nyn nyo nyx nyy o-i oaa oab oac oai oan oao oar oax ob- oba obb obc obi obn obo obr obx oby oc- oca ocb occ oci ocn oco ocr ocx oia oib oic oii oin oio oir on- ona onb onc oni onn ono onr onx ony oo- ooa oob ooc ooi oon ooo oor oox or- ora orb orc ori orn oro orr orx ory ox- oxa oxb oxc oxi oxn oxo oxx oxy oya oyi oyo ra- raa rab rac rai ran rao rar rax ray rba rbb rbc rbi rbn rbo rbr rbx rca rcb rcc rci rcn rco rcr rcx ria rib ric rii rin rio rir rix riy rna rnb rnc rni rnn rno rnr rny roa rob roc roi ron roo ror rox roy rra rrb rrc rri rrn rrr rxr ry- rya ryc ryn ryo ryr ryy xaa xac xan xar xbc xbr xbx xcb xci xcr xcx xia xic xii xin xio xix xna xnc xno xoa xoc xoi xon xoo xor xox xrc xrx xry xxi xxo xxx xxy xyr xyy yaa yab yac yai yan yao yar yax yay ybc ybi ybr yby yca ycc yci yco ycy yii yin yio yir yna ynn yny yob yoc yoi yon yoo yor yox yoy yra yrc yrn yro yxa yxy yyb yyc yyy