C132233133112121111331333133313331333132322331333133313223113313231232221   >>    C13223313311212111133133313331333133313232233133313331322311331323123222   <<    C132233133112121111331333133313331333132322331333133313223113313231232223   >>      C132233133112121111331333133313331333132322331333133313223113313231232222   >>