Two digit
((Dr|y|y|70|0))

((Dr))

70

((Dr/sandbox))

70

Four digit
((Dr|y|y|1969|0))

((Dr))

1969

((Dr/sandbox))

1969

Standard three digit
((Dr|y|y|739|0))

((Dr))

739

((Dr/sandbox))

739

Nonstandard three digit offset 910
((Dr|y|y|910|+1))

((Dr))

911

((Dr/sandbox))

911

Nonstandard three digit offset 990
((Dr|y|y|990|+1))

((Dr))

991

((Dr/sandbox))

991

Nonstandard three digit 911
((Dr|y|y|911|0))

((Dr))

911

((Dr/sandbox))

911

Nonstandard three digit 999
((Dr|y|y|999|0))

((Dr))

999

((Dr/sandbox))

999