-up c-- ccc ccd cce ccf ccp ccu ccx cdc cdd cde cdf cdp cdu cdx ce- cec ced cee cef cep ceu cex cfc cfd cfe cff cfp cfu cfx cpc cpd cpe cpf cpp cpu cpx cuc cud cue cuf cup cuu cxc cxf cxp cxx dcc dcd dce dcf dcp dcu dcx ddc ddd dde ddf ddp ddu ddx de- dec ded dee def dep deu dex dfc dfd dfe dff dfp dfu dfx dpc dpd dpe dpf dpp dpu duc dud due duf dup dux dxc dxd dxp dxx ec- ecc ecd ece ecf ecu ecx ed- edc edd ede edf edp edu edx eec eed eee eef eep eex ef- efc efd efe eff efp efx ep- epc epd epe epf epp epu epx eu- euc eud eue euf eup eux ex- exc exd exe exp exu exx fcc fcd fce fcf fcp fcu fcx fdc fdd fde fdf fdp fdu fdx fec fed fee fef fep feu fex ffc ffd ffe fff ffp ffu ffx fpc fpd fpe fpp fpu fpx fud fue fuf fup fuu fux fxe fxp fxu fxx p-p pcc pcd pce pcf pcp pcu pcx pdc pdd pde pdf pdp pdu pdx pec ped pee pef pep peu pex pfc pfd pfe pff pfp pfu pfx ppc ppd ppe ppf ppp ppu ppx puc pud pue puf pup puu pxc pxe ucc ucd uce ucf ucp ucu udc udd ude udf udp udu udx uec ued uee uef uep ufc ufd ufe uff ufp ufu ufx up- upc upd upe upf upp upu upx uuc uue uuu uxc uxf uxu xcd xcf xcp xcx xdc xde xdf xed xee xep xeu xex xfe xfx xpc xpd xpe xpf xpp xue xup xxp xxx