// @target: es5

var t1 = 10;
var t2 = 10;
var s;

// With TemplateTail
`${t1 ** -t2} world`;
`${(-t1) ** t2 - t1} world`;
`${(-++t1) ** t2 - t1} world`;
`${(-t1++) ** t2 - t1} world`;
`${(~t1) ** t2 ** --t1 } world`;
`${typeof (t1 ** t2 ** t1) } world`;

// TempateHead & TemplateTail are empt
`${t1 ** -t2} hello world ${t1 ** -t2}`;
`${(-t1) ** t2 - t1} hello world ${(-t1) ** t2 - t1}`;
`${(-++t1) ** t2 - t1} hello world ${t1 ** (-++t1) **- t1}`;
`${(-t1++) ** t2 - t1} hello world ${t2 ** (-t1++) **  - t1}`;
`${(~t1) ** t2 ** --t1 } hello world ${(~t1) ** t2 ** --t1 }`;
`${typeof (t1 ** t2 ** t1)} hello world ${typeof (t1 ** t2 ** t1)}`;

// With templateHead
`hello ${(-t1) ** t2 - t1}`;
`hello ${(-++t1) ** t2 - t1}`;
`hello ${(-t1++) ** t2 - t1}`;
`hello ${(~t1) ** t2 ** --t1 }`;
`hello ${typeof (t1 ** t2 ** t1)}`;