C1111233133313231133133313331333133313233231133133313113313131121   >>    C111123313331323113313331333133313331323323113313331311331313112   <<    C1111233133313231133133313331333133313233231133133313113313131123   >>      C1111233133313231133133313331333133313233231133133313113313131122   >>