C3123213231313231312323132313231323133313233313221323331323133313232323221   >>    C312321323131323131232313231323132313331323331322132333132313331323232322   <<    C3123213231313231312323132313231323133313233313221323331323133313232323223   >>      C3123213231313231312323132313231323133313233313221323331323133313232323222   >>