C11112331312111112111133133313331333131333132312111113331323211213321   >>    C1111233131211111211113313331333133313133313231211111333132321121332   <<    C11112331312111112111133133313331333131333132312111113331323211213323   >>      C11112331312111112111133133313331333131333132312111113331323211213322   >>