C112313233211113313121111331333133313232233132313231333132313221   >>    C11231323321111331312111133133313331323223313231323133313231322   <<    C112313233211113313121111331333133313232233132313231333132313223   >>      C112313233211113313121111331333133313232233132313231333132313222   >>