C11111333133313232233133313331333133112111112113313231333132312112221231   >>    C1111133313331323223313331333133313311211111211331323133313231211222123   <<    C11111333133313232233133313331333133112111112113313231333132312112221233   >>      C11111333133313232233133313331333133112111112113313231333132312112221232   >>