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