C11112331312111112111133133313231333132313232233133313222123313231111   >>    C1111233131211111211113313331323133313231323223313331322212331323111   <<    C11112331312111112111133133313231333132313232233133313222123313231113   >>      C11112331312111112111133133313231333132313232233133313222123313231112   >>