C11122123231323131323131323132322331313232313231333132213233231   >>    C1112212323132313132313132313232233131323231323133313221323323   <<    C11122123231323131323131323132322331313232313231333132213233233   >>      C11122123231323131323131323132322331313232313231333132213233232   >>