> For the complete documentation index, see [llms.txt](https://support.keyst.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.keyst.one/keystone-table/instruction-guide.md).

# Keystone Tablet Instruction Guide

Please follow these instructions while assembling the Keystone Tablet.

## **I. Steps**

1\. Slide counterclockwise to open the Keystone Tablet.

<figure><img src="/files/-MkW10Qpz9hQ5BWJ9VuC" alt="Keystone Tablet-1"><figcaption></figcaption></figure>

2\. Use the screwdriver provided in the box to unscrew the three screws shown in the picture below, and proceed to insert the letter tiles in the slots provided.

<figure><img src="/files/-MkW13dI9rvFhBf6QbQU" alt="Keystone Tablet-2"><figcaption></figcaption></figure>

3\. Find the corresponding stainless steel letter tiles and place them in their respective slots based on your mnemonic. Insert the first four letters of each word.

<figure><img src="/files/-MkW1pjq8sa6YNyndYyJ" alt="Keystone Tablet-3"><figcaption></figcaption></figure>

## II. FAQ

### 1. How do I retrieve the complete word based on the first four letters？

Each empty slot of the Keystone Tablet can be placed in 4 letter slots. According to BIP39, the first 4 letters of each word in the mnemonic list are different. That is, four letters can be used to represent a unique mnemonic. If you encounter a 3-letter mnemonic, you can fill the empty space with the blank side (reverse) of the letter tile. You can view the 2048 mnemonic list here.&#x20;

{% embed url="<https://github.com/bitcoin/bips/blob/master/bip-0039/english.txt>" %}

### 2. What should I do if the letters provided are not enough?&#x20;

The number of letter tiles provided by the Keystone Tablet is calculated based on the probability that each letter will appear in the mnemonic list. However, a small probability that a certain letter is not enough does exist. You can solve the problem via the following methods:

* The character blocks "b" and "q", "d" and "p", "n" and "u" can be used interchangeably. Please confirm if your problem still exists.
* Use the blank side of a letter tile instead.
* Generate new mnemonics and assemble. (The probability that the character block is not enough again is almost zero.)

[Number of letter tiles.xls](https://docs.google.com/spreadsheets/d/1KqQLm1Vb9iygIi_K1i3Q8Xhg6m4uezLN/edit#gid=640823393) &#x20;

{% content-ref url="/pages/-MjXAJgC8OEJcqd5hm-e" %}
[Why does the Keystone Tablet have only 4 slots for a word?](/keystone-table/why-does-the-keystone-tablet-have-only-4-slots-for-a-word.md)
{% endcontent-ref %}