C1111233131211111211113313331333133313221211113313331333132313123131   >>    C111123313121111121111331333133313331322121111331333133313231312313   <<    C1111233131211111211113313331333133313221211113313331333132313123133   >>      C1111233131211111211113313331333133313221211113313331333132313123132   >>