Ex$\mathrm{.}1)$ By using the following sieve analysis results, determine the amount of gravel, sand and fine particles in percentage and then draw grain size distribution curve and determine the parameters of $Cu$ and $Cc$ for the soil sample.

$\backslash$table$[[\backslash$table$[[$Sieve$],[$No$.]],$Diameter $($mm$),\backslash$table$[[$Mass of soil$],[$retained $($g$)]],\backslash$table$[[$Percentage$],[$mass$],[$retained$]],\backslash$table$[[$Cumulative$],[$percentage$],[$retained$]],\backslash$table$[[$Percentage$],[$Passing$],[($Finer percent$)]]],[4,4\mathrm{.}75,20\mathrm{.}4,,,],[10,2\mathrm{.}00,4\mathrm{.}2,,,],[20,0\mathrm{.}850,9\mathrm{.}2,,,],[40,0\mathrm{.}425,31\mathrm{.}6,,,],[60,0\mathrm{.}250,45\mathrm{.}4,,,],[80,0\mathrm{.}180,70\mathrm{.}4,,,],[100,0\mathrm{.}150,149,,,],[200,0\mathrm{.}075,8\mathrm{.}8,,,],[$Pan$,,1,,,]]$