Each 'x' should be at the first column.

{foreach 1..1 as $i}
            x
            x
{/foreach}

{foreach 1..1 as $i}
	x
	       y
{/foreach}

{foreach 1..1 as $i}
           y
    x	
{/foreach}

{foreach 1..1 as $i}
	x
	         y
	x
{/foreach}

{foreach 1..1 as $i}
	       y
	x
	       y
{/foreach}

x
{foreach 'x'..'x' as $i}
            {$i}
{/foreach}
x

x
{if true}
       x 
{else}
       x
{/if}
x

x
{if false}
       x 
{else}
       x
{/if}
x

{switch 1}
	{case 1}
		x
	{/case}
{/switch}
x
x

{*delimiter*}
{*include*}