C312312111111331312111133133313331333133322331323133313223122321   >>    C31231211111133131211113313331333133313332233132313331322312232   <<    C312312111111331312111133133313331333133322331323133313223122323   >>      C312312111111331312111133133313331333133322331323133313223122322   >>