C11112331312111112111133133313331333132322321111331323133313233221   >>    C1111233131211111211113313331333133313232232111133132313331323322   <<    C11112331312111112111133133313331333132322321111331323133313233223   >>      C11112331312111112111133133313331333132322321111331323133313233222   >>