Chris Patuzzo's pangram-machine ported to Go.

Results of running it on MacBook Air M3 2024:

# make build
GOEXPERIMENT=simd go build -o pangram .
# file pangram
pangram: Mach-O 64-bit executable arm64
# ./pangram
Enter initial text: This autogram contains and
Initial constants: [5 1 2 2 8 2 2 2 4 1 1 1 2 10 12 1 1 2 7 7 2 2 4 1 1 1]

Running Pangram Machine Mark II...
EUREKA! [5 1 2 2 31 5 5 8 12 1 1 2 2 18 16 1 1 6 27 21 3 7 8 3 4 1]
This autogram contains and
 five a's, one b, two c's, two d's, thirty-one e's, five f's, five g's, eight h's, twelve i's, one j, one k, two l's, two m's, eighteen n's, sixteen o's, one p, one q, six r's, twenty-seven s's, twenty-one t's, three u's, seven v's, eight w's, three x's, four y's, one z.

EUREKA! [5 1 2 2 26 6 2 4 13 1 1 1 2 21 16 1 1 5 27 20 3 6 9 5 5 1]
This autogram contains and
 five a's, one b, two c's, two d's, twenty-six e's, six f's, two g's, four h's, thirteen i's, one j, one k, one l, two m's, twenty-one n's, sixteen o's, one p, one q, five r's, twenty-seven s's, twenty t's, three u's, six v's, nine w's, five x's, five y's, one z.

Finished 6273179136 iterations in 2.61 seconds which is equivalent to 2403.4 MHz.