The command “show key chain” shows the decrypted key strings, and because of that, can be used to decrypt other type 7 passwords:

R1(config)#username cisco password cisco
R1(config)#do show run | include password 7
username cisco password 7 05080F1C2243
 password 7 ****
R1(config)#key chain CRACK
R1(config-keychain)#key 1
R1(config-keychain-key)#key-string 7 05080F1C2243
R1(config-keychain-key)#do show key chain
Key-chain CRACK:
    key 1 — text “cisco”
        accept lifetime (always valid) – (always valid) [valid now]
        send lifetime (always valid) – (always valid) [valid now]
R1(config-keychain-key)#