C11111333133313232233133313331333133112111112113313231313331323133212321   >>    C1111133313331323223313331333133313311211111211331323131333132313321232   <<    C11111333133313232233133313331333133112111112113313231313331323133212323   >>      C11111333133313232233133313331333133112111112113313231313331323133212322   >>