CSS Test: font-variant-alternates: swash(); low level equivalence

Test passes if the three lines below are identical, with ten crosses (✗), one check mark (✓), two crosses (✗), one check mark (✓) followed by six crosses (✗).

Xnophijklmqrstuvwxyz

Xnophijklmqrstuvwxyz

BBBBBBBBBBABBABBBBBB