USING: interpolate kernel math math.parser qw sequences ; CONSTANT: table { { 0 3 1 7 5 9 8 6 4 2 } { 7 0 9 2 1 5 4 8 6 3 } { 4 2 0 6 8 7 1 3 5 9 } { 1 7 5 0 9 8 3 4 2 6 } { 6 1 2 3 0 4 5 9 7 8 } { 3 6 7 4 2 0 9 5 8 1 } { 5 8 6 9 7 2 0 1 3 4 } { 8 9 4 5 3 6 2 0 1 7 } { 9 4 3 8 6 1 7 2 0 5 } { 2 5 8 1 4 3 6 7 9 0 } } : damm? ( str -- ? ) 0 [ digit> swap table nth nth ] reduce zero? ; qw{ 5724 5727 112946 112949 } [ dup damm? "" "in" ? [I ${} is ${}validI] nl ] each