/*
	Simple nesting
*/
.div {
	color: blue;
	.nest {
		&.deep {
			color: yellow;
			.deeper {
				color: angry;
				.deepest {
					color: purple;
					.hidden {}
				}
			}
		}
		color: red;
	}
}
/*
	& combinator and placements
*/
h1, h2, h3 {
	a, p {
    	&:hover {
      		color: red;
    	}
  	}
}
a {
  	color: red;
  	&:hover { color: blue; }
  	div & { color: green; }
  	p & span { color: yellow; }
}
.foo {
	.bar, .baz {
	    & .qux {
	      	display: block;
	    }
	    .qux & {
	      	display: inline;
	    }
	    .qux & .biz {
	      	display: none;
	    }
  	}
}
/*
	@_o
*/
#first > .one {
	> #second .two > #deux {
    	width: 50%;
    	#third {
      		&:focus {
        		color: black;
        		#fifth {
          			> #sixth {
            			.seventh #eighth {
                			color: purple;
                			+ .sibling_selector {
                				color: angry;
                			}
            			}
          			}
          			&:hover {
          				// empty
          			}
        		}
      		}
      		~ p.general_sibling_selector {
      			color: unused;
      		}
      		height: 100%;
    	}
    	#fourth, #five, #six {
      		color: #110000;
      		.seven, .eight > #nine {
        		border: 1px solid black;
      		}
      		#ten {
        		color: red;
      		}
    	}
  	}
  	font-size: 2em;
}
/*
	Multiples
	expands to 160 identifiers
*/
h1, h2, h3, h4, h5 {
	a, p, div, span {	
		.one, .two, .three, .four {
			&:hover, &:focus {	
				display: block;
			}
		}
	}
}
.child, .sibling {
  & + & {
    color: red;
  }
}
.child, .sibling {
  & + & + & {
    color: red;
  }
}
.child, .sibling, .foo {
  & + & + & {
    color: red;
  }
}
.child, .sibling, .foo {
  & + & {
    color: red;
  }
}