The International Morse code is a way of transmitting coded text by using sequences of on$/$off tones. Each character is $1$ or $2$ or $3$ or $4$ or $5$ segments long, and each segment is either a dot or a dash. For example, the letter G is transmitted as two dashes followed by a dot, as in $--..$ How many different characters are possible with this scheme? Are there enough characters for the alphabet and numbers?