Highlights
Cracking Code Purple
Anna Ouchchy
People & Places
Genevieve Grotjan, cryptanalyst, United States, cipher machine
HL
757
B2
English
9781643036861
Genevieve Grotjan, a cryptanalyst during World War II, cracked a complicated Japanese code called Code Purple. In doing so, she saved thousands of lives.
Word lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Coverage |
|---|---|---|
| Eiken Grade 1 | 3,105 | 0% |
| Eiken Grade 2 | 866 | 0.69% |
| Eiken Grade 3 | 900 | 7.56% |
| Eiken Grade 4 | 600 | 13.83% |
| Eiken Grade 5 | 600 | 16.5% |
| Eiken Grade Pre1 | 2,868 | 0.35% |
| Eiken Grade Pre2 | 1,327 | 1.13% |
| Eiken Grade Pre2+ | 1,562 | 1.73% |
| NDL | 875 | 18.97% |
| NGSL 1 to 1,000 | 1,000 | 17.5% |
| NGSL 1,001 to 2,000 | 1,000 | 4.1% |
| NGSL 2,001 to 3,000 | 801 | 1.37% |
| NGSL Supplemental | 52 | 5.77% |
Grammar lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Unique | Coverage | Unique |
|---|---|---|---|---|
| Eiken Grade Pre1 | 94 | 94 | 0% | 0% |
| Eiken Grade 2 | 123 | 122 | 0% | 0% |
| Eiken Grade Pre2 | 111 | 108 | 0% | 0% |
| Eiken Grade 3 | 48 | 47 | 0% | 0% |
| Eiken Grade 4 | 52 | 49 | 0% | 0% |
| Eiken Grade 5 | 176 | 139 | 0% | 0% |
| A1 | 352 | 316 | 0% | 0% |
| A2 | 949 | 893 | 0% | 0% |
| B1 | 1,126 | 1,106 | 0% | 0% |
| B2 | 775 | 760 | 0% | 0% |
| C1 | 402 | 395 | 0% | 0% |
| C2 | 312 | 308 | 0% | 0% |