yes: abcd ~ efgh =? abefcgdh
yes: what ~ up =? whatup
yes: what ~ up =? upwhat
 no: yerps ~ cbace =? cyberspace
yes: yerpc ~ cbsae =? cyberspace
 no: these ~ are =? crazy
 no: 000000 ~ 000000 =? 00000000000
yes: 01010101 ~ 01010101 =? 0011010100110101
 no: 00000000 ~ 11111111 =? 1010010111000010
yes: prclfrglstexildcou ~ sueaiaiiicpaiois =? supercalifragilisticexpialidocious
yes: a ~ b =? ab
yes: a ~ b =? ba
 no: a ~ b =? aa
 no: a ~ b =? bb