- or download this
ab cd ef gh
[..............xxxxxxx....................][......yyyyyyyyyyy.........
+...............]
- or download this
af d eb c gh
[..............yyyyyyy....................][......xxxxxxxyyyy.........
+...............]
- or download this
af d eb c gh
...
af gd eb ch
[..............yyyyyyyyyyy.................][.........xxxxxxx.........
+...............]