C11112331312111112111133133313331333133322131131211331333132321311   >>    C1111233131211111211113313331333133313332213113121133133313232131   <<    C11112331312111112111133133313331333133322131131211331333132321313   >>      C11112331312111112111133133313331333133322131131211331333132321312   >>