VIC short phrase


 * Used to determine the order of the letters in the straddling checkerboard for one of the transpositions
 * Historically it contained the most used letters in English but theoretically it could attribute any of them

Possibilities

 * ESTONIA


 * A SIN TO ERR


 * AT ONE SIR
 * R BOTMLEY - possibly the phrase is hidden above the cipher text as code D:R BOTTOMLEY