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Trigrams

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Tool to analyze trigrams appearance frequency in a message. A trigram is the association of 3 characters, usually 3 letters that appear consecutively in a message.

Trigrams Frequency Analysis



Allowed characters in trigrams







Trigrams Parameters




Action






Answers to Questions

How to analyse trigrams?

Trigrams (groups of three 3 letters) are used in some encryptions in cryptography. There are 2 main modes of appearance of trigrams:

- A trigram can appear when a single character (or a bigram) is encrypted by 3 characters.

Example: A can become 'BCD', or AB can become CDE

- A trigram can be derived from the encryption of another trigram

Example: ABC can become DEF

What are the most common trigrams in english?

The top 100 trigrams that appear in the english language are :

THE1.87%AND0.78%ING0.69%HER0.42%
THA0.37%ENT0.36%ERE0.33%ION0.33%
ETH0.32%NTH0.32%HAT0.31%INT0.29%
FOR0.28%ALL0.27%STH0.26%TER0.26%
EST0.26%TIO0.26%HIS0.25%OFT0.24%
HES0.24%ITH0.24%ERS0.24%ATI0.24%
OTH0.23%FTH0.23%DTH0.23%VER0.22%
TTH0.22%THI0.22%REA0.21%SAN0.21%
WIT0.21%ATE0.2%ARE0.2%EAR0.19%
RES0.19%ONT0.18%TIN0.18%ESS0.18%
RTH0.18%WAS0.18%SOF0.18%EAN0.17%
YOU0.17%SIN0.17%STO0.17%IST0.17%
EDT0.16%EOF0.16%EVE0.16%ONE0.16%
AST0.16%ONS0.16%DIN0.16%OME0.16%
CON0.16%ERA0.16%STA0.15%OUR0.15%
NCE0.15%TED0.15%GHT0.15%HEM0.15%
MAN0.15%HEN0.15%NOT0.15%ORE0.15%
OUT0.15%ORT0.15%ESA0.15%ERT0.15%
SHE0.14%ANT0.14%NGT0.14%EDI0.14%
ERI0.14%EIN0.14%NDT0.14%NTO0.14%
ATT0.14%ECO0.13%AVE0.13%MEN0.13%
HIN0.13%HEA0.13%IVE0.13%EDA0.13%
INE0.13%RAN0.13%HEC0.13%TAN0.13%
RIN0.13%ILL0.13%NDE0.13%THO0.13%
HAN0.13%COM0.12%IGH0.12%AIN0.12%

For information/comparison, in French language it is:

ENT0.84%LES0.77%QUE0.62%EDE0.61%
DES0.56%RES0.43%EST0.42%ELA0.41%
EME0.41%ELE0.41%SDE0.4%ION0.39%
LLE0.38%ERE0.37%TRE0.37%ESE0.37%
ANT0.37%MEN0.36%OUR0.35%AIT0.34%
DEL0.33%UNE0.33%NTE0.32%PAR0.31%
EUR0.3%ESD0.3%TIO0.29%TDE0.28%
IEN0.28%ESA0.28%ONT0.28%QUI0.27%
SSE0.27%ANS0.27%ITE0.27%IRE0.26%
SLE0.26%ESP0.25%CON0.25%SON0.25%
ESS0.25%ONS0.25%NDE0.25%ECO0.24%
TES0.24%ATI0.24%EQU0.23%DAN0.23%
AIS0.23%IQU0.22%ETE0.22%TER0.22%
CHE0.22%OND0.21%ELL0.21%IER0.21%
RLE0.21%ESC0.21%TLE0.21%TEN0.2%
PRE0.2%INE0.2%UEL0.2%EAU0.2%
NES0.2%POU0.2%ILL0.2%URE0.2%
ISE0.2%CES0.2%EET0.2%SQU0.2%
SEN0.2%ETA0.19%OUS0.19%SET0.19%
ESO0.19%ECE0.19%EPA0.19%NCE0.19%
TOU0.19%SES0.19%DEC0.19%COM0.19%
ONN0.19%NNE0.18%ERA0.18%REN0.18%
NTD0.17%SER0.17%URS0.17%MME0.17%
NTA0.17%ALE0.17%ETR0.16%OUT0.16%
RAI0.16%RAN0.16%AIN0.16%RDE0.16%

Source code

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