{ "fob" } [ "foo" <circular> CHAR: b 2 pick set-nth >string ] unit-test
{ "boo" } [ "foo" <circular> CHAR: b 3 pick set-nth-unsafe >string ] unit-test
{ "ornact" } [ "factor" <circular> 4 over change-circular-start CHAR: n 2 pick set-nth >string ] unit-test
{ "fob" } [ "foo" <circular> CHAR: b 2 pick set-nth >string ] unit-test
{ "boo" } [ "foo" <circular> CHAR: b 3 pick set-nth-unsafe >string ] unit-test
{ "ornact" } [ "factor" <circular> 4 over change-circular-start CHAR: n 2 pick set-nth >string ] unit-test