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\ quizzie 2-c.forth------------------------------------------------------
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( Quizzie 2-c )
\ 1.  SWAP ROT
\ 2. SWAP DUP ROT SWAP
\ 3. : -ROT  ROT ROT ; ( probably your Forth has it already. )
\ 4. : 2C4   DUP 1 + SWAP / ;  or
\    : 2C4   DUP 1+ SWAP / ;
\ 5. : 2C5   DUP 7 *  5 + * ;
\ 6. : 2C6   OVER 9 *  SWAP - * ;