C1111233131211111211113313331333133313331313331333133313331333112331322223331   >>    C111123313121111121111331333133313331333131333133313331333133311233132222333   <<    C1111233131211111211113313331333133313331313331333133313331333112331322223333   >>      C1111233131211111211113313331333133313331313331333133313331333112331322223332   >>