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connectives
(Ù,Ú,Þ,Û) - logically combine
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sentences
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PÙQ, PÚQ, PÞQ, PÛQ are complex sentences
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e.g. PÞØQ: “If there is a mine at (1,2), then there is
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not a
mine at (2,2).”
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parentheses
- disambiguates grammar
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e.g. PÞØQ ÙQ
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PÞ(ØQ ÙQ) vs.
(PÞØQ) ÙQ
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