{12}//line comment
{0}
{10}/* block comment */{0}

{10}/* block comment on 
multiple lines */{0}

{10}/* //line comment within block comment */{0}

{12}// /*block comment within line comment */
{0}
{12}// using open-block-comment symbol alone on line comment /*
{0}
{10}/* /* nested block comment */ */{0}

{2}DISPLAY{0} {3}"this line of code is a test"{6}.{0} 
{2}DISPLAY{0} {3}"//this line of code is a test"{6}.{0}
{2}DISPLAY{0} {3}"/* this line of code is a test */"{6}.{0}

{12}// using close-block-comment symbol alone on line comment */
{0}
{12}// /* improperly closed block comment within line comment */ */
{0}
{10}/* 
//line comment 1 in block comment
//line comment 2 in block comment
//line comment 3 in block comment
*/{0}

{10}/*
block comment text
//line comment text
/* inner block comment text*/
*/{0}

{2}DISPLAY{0} {3}"This is a open-block-comment symbol /*"{6}.{0}
{2}DISPLAY{0} {3}"This is a close-block-comment symbol */"{6}.{0}

{12}//* line comment plus * looks like open-block-comment
{0}

{2}DISPLAY{0} {3}"this line of code is a test"{6}.{0}

{10}/*display statement within block comment
DISPLAY "this is a string".
*/{0}

{2}DISPLAY{0} {3}"//line comment within string"{6}.{0}

{2}DISPLAY{0} {3}"/* //line comment within block comment within string */"{6}.{0}
                                                                        
{10}/* Improperly closed block comment */{0} {6}*/{0}

{2}DISPLAY{0} {3}"this line of code is a test"{6}.{0}

{2}DISPLAY{0} {3}"line comment with leading whitespace"{6}.{0} {12}// this is a line comment
{2}DISPLAY{0} {3}"line comment without leading whitespace"{6}.//{0} {7}this{0} {7}is{0} {7}not{0} {7}a{0} {7}line{0} {7}comment{0}