C1111233131211111211113313331333133313331333133313331333133313222323323131   >>    C111123313121111121111331333133313331333133313331333133313331322232332313   <<    C1111233131211111211113313331333133313331333133313331333133313222323323133   >>      C1111233131211111211113313331333133313331333133313331333133313222323323132   >>