[R] cluster analysis with pairwise data

[paladini]

Hello,
I want to do a cluster analysis with my data. The problem is, that the 
variables dont't consist of single value but the entries are pairs of 
values.
That lokks like this:


Variable 1:    Variable2:      Variable3:  .    .    .
(1,2)          (1,5)           (4,2)
(7,8)          (3,88)          (6,5)
(4,7)          (12,4)          (4,4)
.               .              .
.               .              .
.               .              .
Is it possible to perform a cluster-analysis with this kind of data in 
R ?
I dont even know how to get this data in a matrix or a dada-frame or 
anything like this.

It would be really nice if somebody could help me.

Best regards and happy Easter

Claudia