C1111233133313231133133313231333133313113313113313231333131211111333132232321   >>    C111123313331323113313331323133313331311331311331323133313121111133313223232   <<    C1111233133313231133133313231333133313113313113313231333131211111333132232323   >>      C1111233133313231133133313231333133313113313113313231333131211111333132232322   >>