        S0 = HEAP[(s | x0 >> 22 & 1020) >> 2] << 24 ^ HEAP[(s | x1 >> 14 & 1020) >> 2] << 16 ^ HEAP[(s | x2 >> 6 & 1020) >> 2] << 8 ^ HEAP[(s | x3 << 2 & 1020) >> 2] ^ HEAP[(k | i | 0) >> 2], S1 = HEAP[(s | x1 >> 22 & 1020) >> 2] << 24 ^ HEAP[(s | x2 >> 14 & 1020) >> 2] << 16 ^ HEAP[(s | x3 >> 6 & 1020) >> 2] << 8 ^ HEAP[(s | x0 << 2 & 1020) >> 2] ^ HEAP[(k | i | 4) >> 2], S2 = HEAP[(s | x2 >> 22 & 1020) >> 2] << 24 ^ HEAP[(s | x3 >> 14 & 1020) >> 2] << 16 ^ HEAP[(s | x0 >> 6 & 1020) >> 2] << 8 ^ HEAP[(s | x1 << 2 & 1020) >> 2] ^ HEAP[(k | i | 8) >> 2], S3 = HEAP[(s | x3 >> 22 & 1020) >> 2] << 24 ^ HEAP[(s | x0 >> 14 & 1020) >> 2] << 16 ^ HEAP[(s | x1 >> 6 & 1020) >> 2] << 8 ^ HEAP[(s | x2 << 2 & 1020) >> 2] ^ HEAP[(k | i | 12) >> 2];