S PP VP VP VP VP P ↑ NP VP P NP VP NP VP PP types program with 1.0 1.0 0.3 0.3 0.15 0.25 1.0 NP →>> NP →>> NP →>> NP →>> NP →>> NP →>> NP PP NP NP student types program keyboard 0.25 0.2 0.2 0.07 0.14 0.14

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