# game intro
print('''
[-] : Empty positions
[P] : Player
[B] : Box
[S] : Storage point
''')
# create map and first moving
m = [["-","-","-","-"] ,
    ["-","P","-","-"] ,
    ["-","-","-","-"] ,
    ["-","-","-","-"] ,
]
for i in m :
    for c in i :
        print(c, end = " ")
    print()

# set location
x = 0
y = 0
P = m[x][y]

b = input("Your next move? ")
while b in ["a", "s", "d", "w"] :
    if b == "a" :
        P = m[x][y - 1]
        for i in m :
            for c in i :
                print(c, end = " ")
            print()
        b = input("Your next move? ")
    elif b == "s" :
        P = m[x + 1][y]
        for i in m :
            for c in i :
                print(c, end = " ")
            print()
        b = input("Your next move? ")
    elif b == "d" :
        P = m[x][y + 1]
        for i in m :
            for c in i :
                print(c, end = " ")
            print()
        b = input("Your next move? ")
    else :
        P = m[x - 1][y]
        for i in m :
            for c in i :
                print(c, end = " ")
            print()
        b = input("Your next move? ")