C11112331312111112111133132313331333133313232212111111331323312321111   >>    C1111233131211111211113313231333133313331323221211111133132331232111   <<    C11112331312111112111133132313331333133313232212111111331323312321113   >>      C11112331312111112111133132313331333133313232212111111331323312321112   >>