C1111233131211111211113313231333133313331323221211111323132112323331322121   >>    C111123313121111121111331323133313331333132322121111132313211232333132212   <<    C1111233131211111211113313231333133313331323221211111323132112323331322123   >>      C1111233131211111211113313231333133313331323221211111323132112323331322122   >>