30 50
CDD CD BDB CBC BB DB CC DAB ADD BAD DAA BBD BBB BD BC CAD CA DC CDB AD CCB BCD BA BAA BDA BCC BCB CDA CAB BBA CAA BAB B BCA CCA CB CAC DA C CCC CBD CCD BDD A BAC CBA CDC CBB BDC BBC 
DAA DA BDC CBD BC DC CD DAC BAA BBA DAB BCA BBC CA BD CBA CB DD CDC BA CCC BDA BB BAB BDB BCD BCC CDB CAC BBB CAB BAC C BCB CCB CC CAD DB D CCD CCA CDA CAA B BAD CBB CDD CBC BDD BBD