C112311232313132313231313231323223313233313232213132313231322221   >>    C11231123231313231323131323132322331323331323221313231323132222   <<    C112311232313132313231313231323223313233313232213132313231322223   >>      C112311232313132313231313231323223313233313232213132313231322222   >>