-ic a-a a-b a-c a-i aaa aab aac aae aag aai aas aau ab- aba abb abc abe abg abi abs abu ac- aca acb acc ace acg aci acs acu aea aeb aec aee aeg aei aes aeu ag- aga agb agc age agg agi ags agu ai- aia aib aic aie aig aii ais aiu as- asa asb asc ase asg asi ass asu au- aua aub auc aue aug aui aus b-u baa bab bac bae bag bai bas bau bba bbb bbc bbe bbg bbi bbs bbu bca bcb bcc bce bcg bci bcs bcu be- bea beb bec bee beg bei bes beu bga bgb bgc bge bgg bgi bgs bgu bi- bia bib bic bie big bii bis biu bsa bsb bsc bse bsg bsi bss bsu bua bub buc bue bug bui bus buu c-- caa cab cac cae cag cai cas cau cba cbb cbc cbe cbg cbi cbs cbu cca ccb ccc cce ccg cci ccs ccu ce- cea ceb cec cee ceg cei ces ceu cga cgb cgc cge cgg cgi cgs cgu ci- cia cib cic cie cig cii cis ciu csa csb csc cse csg csi css csu cua cub cuc cue cug cui cus cuu eaa eab eac eae eag eai eas eau eba ebb ebc ebe ebg ebi ebs ebu ec- eca ecb ecc ece ecg eci ecs ecu eea eeb eec eee eeg ees ega egb egc ege egg egi egs egu eia eib eic eie eig eii eis eiu es- esa esb esc ese esg esi ess esu eu- eua eub euc eue eug eui eus gaa gab gac gae gag gai gas gau gba gbc gbe gbg gbi gbs gbu gca gcb gcc gce gcg gci gcs gcu ge- gea geb gec gee geg gei ges geu gga ggb ggc ggg ggi ggs ggu gia gib gic gie gig gii gis giu gsa gsb gsc gse gsg gsi gss gsu gu- gua gub guc gue gug gui gus guu ia- iaa iab iac iae iag iai ias iau iba ibb ibc ibe ibg ibi ibs ibu ica icb icc ice icg ici ics icu ie- iea iec iee ieg iei ies iga igb igc ige igg igi igs igu iia iib iic iie iii iis iiu is- isa isb isc ise isg isi iss isu iu- iua iub iuc iue iug iui ius saa sab sac sae sag sai sas sau sba sbb sbc sbe sbg sbi sbs sbu sca scb scc sce scg sci scs scu se- sea seb sec see seg sei ses seu sga sgb sgc sge sgg sgi sgs sgu sia sib sic sie sig sii sis siu ss- ssa ssb ssc sse ssg ssi sss ssu sua sub suc sue sug sui sus suu ua- uaa uab uac uae uag uai uas uau uba ubb ubc ube ubg ubi ubs ubu uca ucb ucc uce ucg uci ucs ucu uea ueb uec uee ueg uei ues uga ugb ugc uge ugg ugi ugs ugu uia uib uic uie uig uii uis uiu usa usb usc use usg usi uss usu uua uuc uue uug uus uuu