C111123313121111121111331323133313331333132322121111132313233221   >>    C11112331312111112111133132313331333133313232212111113231323322   <<    C111123313121111121111331323133313331333132322121111132313233223   >>      C111123313121111121111331323133313331333132322121111132313233222   >>