I wouldn't sail this ship if I were you
4421 Trees
-4421.1 Seeds, saplings and young trees
–4421.11 Those that are unfortunately eaten by squirrels
—4421.111 Those that eventually grow from a mound of squirrel shit
–4421.12 Those that have fallen from famous and notorious trees, and as a consequence are spread around the world by seekers of curious souvenirs
–4421.13 Spindly saplings in deep shade
–4421.14 Those that grow up plastic poles on the side of new roads
–4421.15 Those that have found their own good place
-4421.2 Mature trees
–4421.21 Those that provide shade in a thunderstorm
—4421.211 Trees that a thousand teenagers have kissed beneath and carved their names on
–4421.22 Great old oak trees in the middle of cornfields
–4421.23 Those that are the joyous haunt of birds
–4421.24 Those grow at jagged angles on cliffs
-4421.3 Living trees of great antiquity
–4421.33 Merged together with treehouses of great complexity
–4421.33 Those that have fallen into the arms of younger trees
–4421.34 Those containing a startling array of snails
-4421.4 Dead trees
–4421.41 Hollow trunks with great beetle-y cavities within
–4421.42 Fallen logs
–4421.43 Carved into statues, poles or similar
–4421.44 Carved into masks
–4421.45 As planks and boards
—4421.451 Treehouses
–4421.46 As paper and cardboard
—4421.461 The paper in books about trees
—-4421.4611 The paper in books about books about trees
-4421.5 Trees only existing in story, myth or legend
–4421.51 Those that walk at night
–4421.52 Those that eat people
–4421.53 Those that steal books
—4421.531 Those that steal books to mourn their relatives buried therein
—4421.532 Those that steal books and casually read them
–4421.54 Those that have fruit of peculiar potency
-4421.6 Secret or mysterious trees
–4421.61 Those that have treasure hidden beneath
–4421.62 Those containing the hearts of ancient witches
-4421.7 Trees existing partly or wholly outside our plane of existance
–4421.71 Trees whose only human-perceptible part is the root
-4421.8 Trees not covered by the previous categories
