D21221323131123313112211231333132322331323312111112111113331323232211   >>    D2122132313112331311221123133313232233132331211111211111333132323221   <<    D21221323131123313112211231333132322331323312111112111113331323232213   >>      D21221323131123313112211231333132322331323312111112111113331323232212   >>