C112313233211113313121111331333133313231323133313331323223313221   >>    C11231323321111331312111133133313331323132313331333132322331322   <<    C112313233211113313121111331333133313231323133313331323223313223   >>      C112313233211113313121111331333133313231323133313331323223313222   >>