| The same would be true if digraph or trigraph frequencies were plotted for a sufficiently long ciphertext. |
| This combination of two letters to represent one sound is called a digraph, as gh, in cough, ch in church. |
| It's a fixed digraph, so when it appears at the beginning of a word, both I and J are capitalised together. |
| Both monosyllabic and polysyllabic words representing closed, silent-e, and vowel digraph or diphthong syllable patterns are presented. |
| A digraph may either be a combination of two consonants or of two vowels or of a vowel and a consonant. |
| Keys are composed of alphabetic characters which obey the digraph statistics of English text. |
