C11112331312111112111133133313231333132322121111133313231121132321323321   >>    C1111233131211111211113313331323133313232212111113331323112113232132332   <<    C11112331312111112111133133313231333132322121111133313231121132321323323   >>      C11112331312111112111133133313231333132322121111133313231121132321323322   >>