Classes:     A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Order	Description	Count	Sample Item
PA	straight keels	3
PB	4 x 4 prows	3
PC	4 x 6 prows	2
PD	6 x 6 prows	3
PE	10 x 10 prows	1