C1111233131211111211113313331333133313232232133313112113313221321   >>    C111123313121111121111331333133313331323223213331311211331322132   <<    C1111233131211111211113313331333133313232232133313112113313221323   >>      C1111233131211111211113313331333133313232232133313112113313221322   >>