C11112331312111112111133133313231333132313232113313231333133313132321111   >>    C1111233131211111211113313331323133313231323211331323133313331313232111   <<    C11112331312111112111133133313231333132313232113313231333133313132321113   >>      C11112331312111112111133133313231333132313232113313231333133313132321112   >>