C11112331312111112111133133313331333132322121111331322133313231333132211321   >>    C1111233131211111211113313331333133313232212111133132213331323133313221132   <<    C11112331312111112111133133313331333132322121111331322133313231333132211323   >>      C11112331312111112111133133313331333132322121111331322133313231333132211322   >>