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function text( key , n ) {
 var texts = lang['ru'][ key ]
 var h = Math.floor( n / 10 % 10 )
 var l = n % 10
 var plural = ( n === 0 )
 ? 0
 : ( l === 1 )&&( h !== 1 )
 ? 1
 : ( l > 1 )&&( l < 5 )&&( h !== 1 )
 ? 2
 : 3
 return texts[plural].replace( /\d+/ , `${n}` )
 }

document.body.innerHTML += text( 'result' , 0 ) + ' '
 document.body.innerHTML += text( 'result' , 1 ) + ' '
 document.body.innerHTML += text( 'result' , 2 ) + ' '
 document.body.innerHTML += text( 'result' , 5 ) + ' '
 document.body.innerHTML += text( 'result' , 10 ) + ' '
 document.body.innerHTML += text( 'result' , 11 ) + ' '
 document.body.innerHTML += text( 'result' , 12 ) + ' '
 document.body.innerHTML += text( 'result' , 15 ) + ' '
 document.body.innerHTML += text( 'result' , 20 ) + ' '
 document.body.innerHTML += text( 'result' , 21 ) + ' '
 document.body.innerHTML += text( 'result' , 22 ) + ' '
 document.body.innerHTML += text( 'result' , 25 ) + ' '

</script>
</body>

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