C111123313121111121111331323133313331333132322121111133313231333133313232313221   >>    C11112331312111112111133132313331333133313232212111113331323133313331323231322   <<    C111123313121111121111331323133313331333132322121111133313231333133313232313223   >>      C111123313121111121111331323133313331333132322121111133313231333133313232313222   >>