diff --git a/asciiWriter/examples/image_random_char.py b/asciiWriter/examples/image_random_char.py
index 84d85da..451b418 100644
--- a/asciiWriter/examples/image_random_char.py
+++ b/asciiWriter/examples/image_random_char.py
@@ -2,7 +2,7 @@
 
 from asciiWriter.patterns import image
 from asciiWriter.utils import make_lines, visit, print_lines
-from asciiWriter.marks import random, single
+from asciiWriter.marks import random, space, single
 
 from os.path import join, dirname
 
diff --git a/asciiWriter/examples/image_rotate.py b/asciiWriter/examples/image_rotate.py
index 524852b..a0496f3 100644
--- a/asciiWriter/examples/image_rotate.py
+++ b/asciiWriter/examples/image_rotate.py
@@ -8,7 +8,7 @@
 
 from asciiWriter.patterns import image
 from asciiWriter.utils import make_lines, visit, print_lines, rotate
-from asciiWriter.marks import sentence, single
+from asciiWriter.marks import sentence, space, single
 
 from os.path import join, dirname
 
diff --git a/asciiWriter/examples/image_sentence.py b/asciiWriter/examples/image_sentence.py
index 262afc0..995247e 100644
--- a/asciiWriter/examples/image_sentence.py
+++ b/asciiWriter/examples/image_sentence.py
@@ -7,7 +7,7 @@
 
 from asciiWriter.patterns import image
 from asciiWriter.utils import make_lines, visit, print_lines
-from asciiWriter.marks import sentence, space
+from asciiWriter.marks import sentence, space, single
 
 from os.path import join, dirname
 
diff --git a/asciiWriter/examples/repeated_sinus_amplitude_variation.py b/asciiWriter/examples/repeated_sinus_amplitude_variation.py
index c0fc169..3325392 100644
--- a/asciiWriter/examples/repeated_sinus_amplitude_variation.py
+++ b/asciiWriter/examples/repeated_sinus_amplitude_variation.py
@@ -2,7 +2,7 @@
 
 from asciiWriter.patterns import sinus_vertical
 from asciiWriter.utils import make_lines, visit, print_lines, merge, translate
-from asciiWriter.marks import sentence, space
+from asciiWriter.marks import sentence, single
 
 import random