a-a a-b a-c a-q aaa aab aac aad aap aaq ab- aba abb abc abd abp abq ac- aca acb acc acd acp acq ad- ada adb adc add adp adq ap- apa apb apc apd app apq aqa aqc aqp b-p baa bab bac bad bap baq bba bbb bbc bbd bbp bbq bca bcb bcc bcd bcp bcq bda bdb bdc bdd bdp bdq bpa bpb bpc bpd bpp bqc bqd bqp c-- caa cab cac cad cap caq cba cbb cbc cbd cbp cbq cca ccb ccc ccd ccp cda cdb cdc cdd cdp cdq cpa cpb cpc cpd cpp cpq cqa cqb cqc cqd daa dab dac dad dap daq dba dbb dbc dbd dbp dbq dca dcb dcc dcd dcp dda ddb ddc ddd ddp ddq dpa dpb dpc dpd dpp dqa p-p paa pab pac pad pap paq pba pbb pbc pbd pbp pca pcb pcc pcd pcp pcq pda pdb pdc pdd pdp pdq ppa ppb ppc ppd ppp ppq pqq qaa qac qad qap qba qbc qbd qbq qca qcc qcd qcp qda qdb qpc qpp qqq